2022 - Day 5
This commit is contained in:
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119d172891
commit
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GPG Key ID:
76BDEC4E165D8AD9
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@ -7,3 +7,5 @@ edition = "2021"
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[dependencies]
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[dependencies]
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anyhow = "1.0"
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anyhow = "1.0"
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regex = "1"
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lazy_static = "1.4.0"
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512
2022/input/5/input
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512
2022/input/5/input
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@ -0,0 +1,512 @@
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[S] [T] [Q]
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[L] [B] [M] [P] [T]
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[F] [S] [Z] [N] [S] [R]
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[Z] [R] [N] [R] [D] [F] [V]
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[D] [Z] [H] [J] [W] [G] [W] [G]
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[B] [M] [C] [F] [H] [Z] [N] [R] [L]
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[R] [B] [L] [C] [G] [J] [L] [Z] [C]
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[H] [T] [Z] [S] [P] [V] [G] [M] [M]
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1 2 3 4 5 6 7 8 9
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move 6 from 1 to 7
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move 2 from 2 to 4
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move 2 from 7 to 4
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move 6 from 4 to 3
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move 1 from 5 to 1
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move 3 from 8 to 3
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move 15 from 3 to 4
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move 6 from 5 to 9
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move 14 from 4 to 2
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move 3 from 2 to 7
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move 1 from 2 to 7
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move 9 from 9 to 1
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move 3 from 2 to 1
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move 7 from 6 to 7
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move 1 from 6 to 8
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move 2 from 9 to 1
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move 9 from 2 to 3
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move 8 from 3 to 9
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move 1 from 1 to 4
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move 1 from 8 to 6
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move 1 from 6 to 2
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move 5 from 9 to 8
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move 2 from 9 to 1
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move 1 from 4 to 2
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move 17 from 1 to 9
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move 1 from 3 to 1
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move 3 from 2 to 3
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move 2 from 4 to 5
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move 12 from 7 to 3
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move 16 from 9 to 2
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move 5 from 7 to 5
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move 2 from 1 to 2
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move 1 from 3 to 6
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move 1 from 4 to 6
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move 1 from 7 to 3
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move 1 from 6 to 3
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move 7 from 3 to 4
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move 5 from 8 to 3
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move 1 from 6 to 7
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move 7 from 3 to 4
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move 6 from 3 to 1
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move 2 from 4 to 8
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move 1 from 5 to 2
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move 10 from 4 to 5
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move 3 from 5 to 2
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move 2 from 8 to 9
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move 5 from 2 to 8
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move 1 from 3 to 5
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move 2 from 5 to 8
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move 12 from 5 to 7
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move 1 from 4 to 2
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move 5 from 9 to 4
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move 1 from 2 to 5
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move 6 from 1 to 3
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move 6 from 3 to 5
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move 10 from 7 to 4
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move 2 from 7 to 3
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move 4 from 7 to 6
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move 1 from 9 to 5
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move 12 from 2 to 1
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move 1 from 8 to 7
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move 3 from 7 to 4
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move 4 from 4 to 8
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move 7 from 5 to 3
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move 1 from 2 to 4
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move 10 from 1 to 5
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move 2 from 1 to 2
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move 4 from 6 to 7
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move 8 from 8 to 3
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move 5 from 4 to 9
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move 12 from 3 to 8
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move 4 from 3 to 8
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move 2 from 9 to 2
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move 3 from 5 to 4
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move 1 from 3 to 5
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move 1 from 7 to 6
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move 14 from 4 to 6
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move 6 from 5 to 9
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move 8 from 2 to 8
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move 3 from 5 to 7
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move 21 from 8 to 4
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move 16 from 4 to 9
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move 8 from 6 to 2
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move 4 from 6 to 1
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move 1 from 4 to 6
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move 2 from 4 to 8
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move 3 from 1 to 8
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move 2 from 4 to 6
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move 1 from 6 to 2
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move 3 from 8 to 4
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move 2 from 2 to 5
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move 2 from 5 to 7
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move 1 from 8 to 9
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move 1 from 4 to 9
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move 1 from 1 to 6
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move 3 from 6 to 3
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move 3 from 2 to 3
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move 1 from 4 to 6
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move 3 from 6 to 7
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move 10 from 9 to 7
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move 1 from 4 to 7
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move 6 from 8 to 3
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move 1 from 6 to 8
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move 2 from 2 to 5
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move 1 from 2 to 1
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move 1 from 8 to 9
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move 1 from 2 to 8
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move 1 from 1 to 9
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move 7 from 9 to 1
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move 1 from 8 to 5
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move 7 from 1 to 7
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move 3 from 5 to 8
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move 3 from 7 to 2
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move 1 from 8 to 4
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move 1 from 2 to 4
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move 2 from 4 to 6
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move 5 from 3 to 1
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move 9 from 7 to 2
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move 6 from 3 to 8
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move 8 from 2 to 7
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move 2 from 6 to 4
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move 2 from 1 to 7
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move 2 from 1 to 4
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move 24 from 7 to 4
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move 4 from 8 to 9
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move 2 from 7 to 5
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move 1 from 5 to 2
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move 1 from 3 to 8
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move 4 from 2 to 8
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move 13 from 9 to 2
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move 2 from 8 to 6
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move 3 from 9 to 6
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move 26 from 4 to 2
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move 1 from 5 to 7
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move 2 from 6 to 2
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move 2 from 4 to 1
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move 7 from 2 to 1
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move 15 from 2 to 6
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move 8 from 2 to 8
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move 4 from 6 to 8
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move 9 from 2 to 9
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move 13 from 6 to 7
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move 6 from 1 to 9
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move 2 from 2 to 4
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move 4 from 1 to 6
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move 3 from 8 to 3
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move 1 from 4 to 9
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move 2 from 6 to 7
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move 1 from 4 to 3
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move 3 from 3 to 2
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move 14 from 7 to 4
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move 5 from 9 to 5
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move 9 from 8 to 5
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move 7 from 9 to 6
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move 2 from 5 to 6
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move 2 from 9 to 2
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move 10 from 5 to 1
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move 1 from 3 to 1
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move 2 from 8 to 1
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move 1 from 9 to 2
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move 1 from 7 to 5
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move 4 from 2 to 1
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move 1 from 9 to 8
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move 3 from 4 to 1
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move 1 from 8 to 6
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move 12 from 1 to 5
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move 1 from 1 to 6
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move 1 from 7 to 5
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move 4 from 6 to 9
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move 2 from 2 to 4
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move 1 from 9 to 6
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move 1 from 1 to 5
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move 2 from 9 to 7
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move 10 from 6 to 5
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move 1 from 6 to 7
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move 20 from 5 to 1
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move 1 from 7 to 9
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move 2 from 9 to 1
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move 3 from 5 to 1
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move 2 from 8 to 4
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move 2 from 8 to 7
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move 1 from 5 to 9
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move 1 from 8 to 4
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move 22 from 1 to 7
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move 5 from 4 to 8
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move 1 from 5 to 9
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move 19 from 7 to 4
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move 2 from 9 to 1
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move 1 from 5 to 9
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move 10 from 1 to 8
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move 1 from 9 to 1
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move 1 from 8 to 3
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move 8 from 4 to 7
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move 1 from 5 to 6
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move 3 from 4 to 5
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move 1 from 5 to 9
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move 11 from 7 to 4
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move 4 from 4 to 9
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move 1 from 6 to 2
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move 1 from 3 to 9
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move 5 from 9 to 4
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move 5 from 7 to 9
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move 23 from 4 to 2
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move 17 from 2 to 7
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move 2 from 2 to 8
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move 4 from 4 to 7
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move 1 from 4 to 5
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move 2 from 5 to 2
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move 5 from 8 to 9
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move 5 from 2 to 7
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move 9 from 7 to 5
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move 11 from 9 to 2
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move 1 from 4 to 3
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move 5 from 8 to 7
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move 3 from 8 to 5
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move 2 from 1 to 3
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move 2 from 3 to 9
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move 1 from 5 to 8
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move 5 from 7 to 5
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move 15 from 5 to 4
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move 2 from 8 to 1
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move 2 from 5 to 1
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move 4 from 4 to 1
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move 1 from 8 to 7
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move 8 from 2 to 1
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move 4 from 2 to 8
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move 2 from 7 to 4
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move 5 from 8 to 6
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move 5 from 7 to 9
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move 4 from 6 to 5
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move 7 from 4 to 8
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move 1 from 6 to 1
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move 1 from 3 to 1
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move 2 from 5 to 1
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move 7 from 1 to 5
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move 5 from 1 to 3
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move 4 from 7 to 9
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move 4 from 3 to 9
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move 2 from 9 to 7
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move 6 from 9 to 2
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move 1 from 4 to 1
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move 1 from 3 to 5
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move 1 from 2 to 5
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move 5 from 9 to 4
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move 4 from 4 to 6
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move 1 from 8 to 9
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move 8 from 4 to 3
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move 7 from 7 to 3
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move 5 from 1 to 3
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move 11 from 5 to 9
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move 1 from 7 to 6
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move 2 from 3 to 5
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move 1 from 3 to 1
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move 3 from 6 to 2
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move 2 from 5 to 1
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move 2 from 1 to 2
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move 3 from 1 to 5
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move 5 from 9 to 2
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move 2 from 6 to 8
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move 2 from 3 to 8
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move 4 from 9 to 7
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move 3 from 5 to 2
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move 2 from 1 to 8
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move 1 from 9 to 8
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move 1 from 9 to 2
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move 4 from 7 to 9
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move 11 from 8 to 7
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move 1 from 8 to 2
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move 6 from 9 to 7
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move 3 from 7 to 1
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move 13 from 2 to 7
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move 24 from 7 to 1
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move 2 from 2 to 6
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move 1 from 8 to 3
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move 1 from 9 to 3
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move 5 from 2 to 4
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move 1 from 2 to 5
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move 1 from 6 to 2
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move 1 from 6 to 3
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move 1 from 2 to 4
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move 3 from 7 to 3
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move 2 from 1 to 7
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move 2 from 3 to 8
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move 2 from 7 to 8
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move 9 from 3 to 2
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move 3 from 4 to 8
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move 1 from 5 to 1
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move 9 from 2 to 1
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move 3 from 4 to 9
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move 1 from 7 to 8
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move 6 from 3 to 9
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move 2 from 1 to 5
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move 15 from 1 to 3
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move 13 from 3 to 9
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move 11 from 1 to 4
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move 5 from 4 to 1
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move 6 from 3 to 6
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move 4 from 4 to 8
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move 6 from 1 to 4
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move 1 from 5 to 2
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move 1 from 2 to 1
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move 3 from 4 to 2
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move 2 from 8 to 5
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move 2 from 4 to 2
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move 9 from 9 to 3
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move 9 from 3 to 5
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move 2 from 9 to 4
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move 5 from 2 to 6
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move 1 from 1 to 8
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move 1 from 4 to 1
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move 10 from 9 to 2
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move 9 from 2 to 4
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move 10 from 4 to 1
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move 3 from 1 to 3
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move 4 from 1 to 2
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move 5 from 2 to 4
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move 2 from 5 to 2
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move 4 from 1 to 7
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move 10 from 5 to 4
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move 2 from 2 to 4
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move 1 from 9 to 2
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move 2 from 3 to 5
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move 1 from 3 to 5
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move 3 from 6 to 7
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move 8 from 4 to 9
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move 6 from 6 to 1
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move 4 from 9 to 5
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move 2 from 9 to 1
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move 1 from 2 to 6
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move 6 from 5 to 2
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move 3 from 7 to 9
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move 4 from 8 to 2
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move 1 from 7 to 9
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move 1 from 5 to 3
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move 2 from 7 to 4
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move 1 from 7 to 1
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move 14 from 1 to 9
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move 1 from 1 to 9
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move 1 from 3 to 8
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move 3 from 2 to 5
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move 2 from 4 to 2
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move 6 from 8 to 1
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move 1 from 2 to 1
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move 5 from 1 to 9
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move 1 from 1 to 7
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move 2 from 8 to 5
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move 1 from 5 to 4
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move 1 from 6 to 1
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move 8 from 2 to 7
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move 2 from 6 to 1
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move 9 from 9 to 5
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move 11 from 4 to 8
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move 4 from 7 to 4
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move 6 from 4 to 6
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move 1 from 7 to 4
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move 6 from 6 to 7
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move 1 from 5 to 9
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move 6 from 8 to 9
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move 8 from 9 to 5
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move 1 from 4 to 5
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move 15 from 9 to 3
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move 3 from 1 to 4
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move 6 from 7 to 2
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move 3 from 4 to 9
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move 2 from 7 to 3
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move 1 from 7 to 3
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move 1 from 7 to 2
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move 2 from 8 to 1
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move 3 from 8 to 5
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move 2 from 1 to 7
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move 8 from 3 to 6
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move 3 from 6 to 5
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move 1 from 6 to 1
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move 10 from 5 to 7
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move 6 from 5 to 4
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move 4 from 2 to 4
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move 6 from 5 to 1
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move 6 from 1 to 8
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move 2 from 9 to 2
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move 2 from 9 to 7
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move 6 from 3 to 7
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move 1 from 3 to 5
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move 1 from 1 to 9
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move 2 from 8 to 1
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move 2 from 5 to 4
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move 3 from 3 to 7
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move 10 from 4 to 6
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move 1 from 9 to 7
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move 12 from 7 to 3
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move 12 from 3 to 8
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move 2 from 1 to 5
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move 1 from 1 to 3
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move 13 from 8 to 1
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move 7 from 7 to 1
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move 13 from 6 to 9
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move 1 from 7 to 4
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move 6 from 5 to 3
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move 3 from 4 to 3
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move 6 from 3 to 1
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move 10 from 9 to 4
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move 2 from 7 to 6
|
||||||
|
move 8 from 1 to 9
|
||||||
|
move 3 from 2 to 9
|
||||||
|
move 1 from 3 to 5
|
||||||
|
move 1 from 3 to 5
|
||||||
|
move 1 from 1 to 4
|
||||||
|
move 6 from 9 to 3
|
||||||
|
move 2 from 6 to 7
|
||||||
|
move 4 from 9 to 5
|
||||||
|
move 4 from 1 to 6
|
||||||
|
move 1 from 2 to 4
|
||||||
|
move 6 from 1 to 4
|
||||||
|
move 3 from 9 to 3
|
||||||
|
move 3 from 6 to 8
|
||||||
|
move 3 from 8 to 7
|
||||||
|
move 5 from 5 to 1
|
||||||
|
move 1 from 3 to 9
|
||||||
|
move 1 from 9 to 5
|
||||||
|
move 1 from 3 to 2
|
||||||
|
move 2 from 5 to 1
|
||||||
|
move 1 from 6 to 9
|
||||||
|
move 1 from 6 to 3
|
||||||
|
move 2 from 9 to 7
|
||||||
|
move 2 from 8 to 1
|
||||||
|
move 1 from 3 to 2
|
||||||
|
move 1 from 2 to 5
|
||||||
|
move 1 from 7 to 1
|
||||||
|
move 7 from 7 to 9
|
||||||
|
move 12 from 1 to 9
|
||||||
|
move 1 from 5 to 2
|
||||||
|
move 1 from 7 to 1
|
||||||
|
move 13 from 4 to 7
|
||||||
|
move 1 from 9 to 4
|
||||||
|
move 5 from 7 to 3
|
||||||
|
move 4 from 9 to 1
|
||||||
|
move 8 from 7 to 9
|
||||||
|
move 3 from 2 to 3
|
||||||
|
move 4 from 3 to 7
|
||||||
|
move 5 from 4 to 6
|
||||||
|
move 3 from 9 to 4
|
||||||
|
move 10 from 1 to 5
|
||||||
|
move 3 from 4 to 7
|
||||||
|
move 16 from 9 to 2
|
||||||
|
move 3 from 9 to 2
|
||||||
|
move 6 from 5 to 3
|
||||||
|
move 4 from 6 to 2
|
||||||
|
move 1 from 4 to 6
|
||||||
|
move 2 from 6 to 8
|
||||||
|
move 1 from 5 to 2
|
||||||
|
move 1 from 5 to 8
|
||||||
|
move 7 from 7 to 2
|
||||||
|
move 16 from 2 to 1
|
||||||
|
move 1 from 5 to 1
|
||||||
|
move 10 from 2 to 8
|
||||||
|
move 14 from 8 to 5
|
||||||
|
move 2 from 2 to 6
|
||||||
|
move 1 from 2 to 5
|
||||||
|
move 2 from 2 to 1
|
||||||
|
move 8 from 1 to 7
|
||||||
|
move 4 from 1 to 7
|
||||||
|
move 2 from 1 to 7
|
||||||
|
move 5 from 3 to 2
|
||||||
|
move 1 from 1 to 6
|
||||||
|
move 2 from 2 to 5
|
||||||
|
move 4 from 1 to 7
|
||||||
|
move 1 from 2 to 8
|
||||||
|
move 1 from 2 to 8
|
||||||
|
move 3 from 6 to 7
|
||||||
|
move 10 from 7 to 5
|
||||||
|
move 1 from 2 to 8
|
||||||
|
move 27 from 5 to 9
|
||||||
|
move 1 from 5 to 6
|
||||||
|
move 1 from 6 to 4
|
||||||
|
move 1 from 4 to 3
|
||||||
|
move 3 from 3 to 7
|
||||||
|
move 4 from 3 to 6
|
||||||
|
move 2 from 6 to 4
|
||||||
|
move 3 from 8 to 1
|
||||||
|
move 2 from 6 to 1
|
||||||
|
move 12 from 7 to 8
|
||||||
|
move 2 from 3 to 9
|
||||||
|
move 1 from 9 to 2
|
||||||
|
move 1 from 2 to 8
|
||||||
|
move 2 from 1 to 2
|
||||||
|
move 6 from 3 to 8
|
||||||
|
move 1 from 7 to 4
|
||||||
|
move 15 from 9 to 5
|
||||||
|
move 7 from 9 to 4
|
||||||
|
move 1 from 2 to 1
|
||||||
|
move 16 from 8 to 2
|
||||||
|
move 8 from 5 to 2
|
||||||
|
move 24 from 2 to 9
|
||||||
|
move 3 from 1 to 2
|
||||||
|
move 24 from 9 to 1
|
||||||
|
move 5 from 5 to 9
|
||||||
|
move 3 from 4 to 1
|
||||||
|
move 1 from 7 to 6
|
||||||
|
move 1 from 6 to 3
|
||||||
|
move 1 from 3 to 2
|
||||||
|
move 3 from 2 to 3
|
||||||
|
move 1 from 5 to 6
|
||||||
|
move 1 from 2 to 7
|
||||||
9
2022/input/5/test-1
Normal file
9
2022/input/5/test-1
Normal file
|
|
@ -0,0 +1,9 @@
|
||||||
|
[D]
|
||||||
|
[N] [C]
|
||||||
|
[Z] [M] [P]
|
||||||
|
1 2 3
|
||||||
|
|
||||||
|
move 1 from 2 to 1
|
||||||
|
move 3 from 1 to 3
|
||||||
|
move 2 from 2 to 1
|
||||||
|
move 1 from 1 to 2
|
||||||
189
2022/src/bin/day5.rs
Normal file
189
2022/src/bin/day5.rs
Normal file
|
|
@ -0,0 +1,189 @@
|
||||||
|
use core::fmt;
|
||||||
|
use std::collections::HashMap;
|
||||||
|
use lazy_static::lazy_static;
|
||||||
|
|
||||||
|
use regex::Regex;
|
||||||
|
use anyhow::Result;
|
||||||
|
use aoc::{Solver, Output};
|
||||||
|
|
||||||
|
// -- Runners --
|
||||||
|
fn main() -> Result<()> {
|
||||||
|
Day::solve()
|
||||||
|
}
|
||||||
|
|
||||||
|
#[cfg(test)]
|
||||||
|
mod tests {
|
||||||
|
use super::*;
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn part1_test1() -> Result<()> {
|
||||||
|
Day::test(aoc::Part::ONE, "test-1", Output::String("CMZ".to_string()))
|
||||||
|
}
|
||||||
|
#[test]
|
||||||
|
fn part2_test1() -> Result<()> {
|
||||||
|
Day::test(aoc::Part::TWO, "test-1", Output::String("MCD".to_string()))
|
||||||
|
}
|
||||||
|
#[test]
|
||||||
|
fn part1_solution() -> Result<()> {
|
||||||
|
Day::test(aoc::Part::ONE, "input", Output::String("RNZLFZSJH".to_string()))
|
||||||
|
}
|
||||||
|
#[test]
|
||||||
|
fn part2_solution() -> Result<()> {
|
||||||
|
Day::test(aoc::Part::TWO, "input", Output::String("CNSFCGJSM".to_string()))
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// -- Implementation --
|
||||||
|
#[derive(Debug)]
|
||||||
|
struct Crate{
|
||||||
|
letter: char,
|
||||||
|
}
|
||||||
|
|
||||||
|
#[derive(Debug)]
|
||||||
|
struct Boat{
|
||||||
|
stacks: HashMap<usize, Vec<Crate>>,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl fmt::Display for Boat {
|
||||||
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||||
|
for i in 0..self.stacks.len() {
|
||||||
|
match self.top(i+1) {
|
||||||
|
Some(cr) => write!(f, "{}", cr.letter)?,
|
||||||
|
None => panic!("No crate in stack")
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Boat {
|
||||||
|
fn new(lines: &Vec<&str>) -> Boat {
|
||||||
|
lazy_static! {
|
||||||
|
static ref RE: Regex = Regex::new(r"\[[A-Z]\]").unwrap();
|
||||||
|
}
|
||||||
|
|
||||||
|
let mut boat = Boat{stacks: HashMap::new()};
|
||||||
|
for line in lines {
|
||||||
|
for mat in RE.find_iter(line) {
|
||||||
|
let index = mat.start() / 4 + 1;
|
||||||
|
// based on the pattern [.] we get the second char
|
||||||
|
let letter = mat.as_str().chars().nth(1).unwrap();
|
||||||
|
|
||||||
|
boat.push(index, Crate{letter});
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Because of how we load the data, each stack is upside down
|
||||||
|
boat.reverse();
|
||||||
|
|
||||||
|
return boat;
|
||||||
|
}
|
||||||
|
|
||||||
|
fn push(&mut self, index: usize, cr: Crate) {
|
||||||
|
let stack = self.stacks.entry(index).or_insert(vec![]);
|
||||||
|
stack.push(cr);
|
||||||
|
}
|
||||||
|
|
||||||
|
fn pop(&mut self, index: usize) -> Option<Crate> {
|
||||||
|
let stack = match self.stacks.get_mut(&index) {
|
||||||
|
Some(s) => s,
|
||||||
|
None => return None,
|
||||||
|
};
|
||||||
|
|
||||||
|
stack.pop()
|
||||||
|
}
|
||||||
|
|
||||||
|
fn top(&self, index: usize) -> Option<&Crate> {
|
||||||
|
let stack = match self.stacks.get(&index) {
|
||||||
|
Some(s) => s,
|
||||||
|
None => return None,
|
||||||
|
};
|
||||||
|
|
||||||
|
stack.last()
|
||||||
|
}
|
||||||
|
|
||||||
|
fn reverse(&mut self) {
|
||||||
|
for stack in self.stacks.iter_mut() {
|
||||||
|
stack.1.reverse()
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// -- Helpers --
|
||||||
|
|
||||||
|
fn parse_instruction(s: &str) -> (usize, usize, usize) {
|
||||||
|
lazy_static! {
|
||||||
|
static ref RE: Regex = Regex::new(r"move (?P<amount>[0-9]+) from (?P<from>[0-9]) to (?P<to>[0-9])").unwrap();
|
||||||
|
}
|
||||||
|
|
||||||
|
let capture = RE.captures(s).unwrap();
|
||||||
|
|
||||||
|
let parse_number = |name| capture.name(name).unwrap().as_str().parse::<usize>().unwrap();
|
||||||
|
let amount: usize = parse_number("amount");
|
||||||
|
let from: usize = parse_number("from");
|
||||||
|
let to: usize = parse_number("to");
|
||||||
|
|
||||||
|
(amount, from, to)
|
||||||
|
}
|
||||||
|
|
||||||
|
// -- Solution --
|
||||||
|
pub struct Day;
|
||||||
|
impl aoc::Solver for Day {
|
||||||
|
fn day() -> u8 {
|
||||||
|
5
|
||||||
|
}
|
||||||
|
|
||||||
|
fn part1(input: &str) -> Output {
|
||||||
|
// The current layout description ends with an empty line
|
||||||
|
let mut boat = Boat::new(&input
|
||||||
|
.lines()
|
||||||
|
.take_while(|line| !line.is_empty())
|
||||||
|
.collect());
|
||||||
|
|
||||||
|
// Each instruction starts with an 'm'
|
||||||
|
input
|
||||||
|
.lines()
|
||||||
|
.skip_while(|line| !line.starts_with('m'))
|
||||||
|
.map(parse_instruction)
|
||||||
|
.for_each(|(amount, from, to)| {
|
||||||
|
for _ in 0..amount {
|
||||||
|
let cr = boat.pop(from).unwrap();
|
||||||
|
boat.push(to, cr);
|
||||||
|
}
|
||||||
|
});
|
||||||
|
|
||||||
|
Output::String(boat.to_string())
|
||||||
|
}
|
||||||
|
|
||||||
|
fn part2(input: &str) -> Output {
|
||||||
|
// The current layout description ends with an empty line
|
||||||
|
let mut boat = Boat::new(&input
|
||||||
|
.lines()
|
||||||
|
.take_while(|line| !line.is_empty())
|
||||||
|
.collect());
|
||||||
|
|
||||||
|
// Each instruction starts with an 'm'
|
||||||
|
input
|
||||||
|
.lines()
|
||||||
|
.skip_while(|line| !line.starts_with('m'))
|
||||||
|
.map(parse_instruction)
|
||||||
|
.for_each(|(amount, from, to)| {
|
||||||
|
// @TODO Is there a nicer way to do this?
|
||||||
|
let mut temp = vec![];
|
||||||
|
|
||||||
|
for _ in 0..amount {
|
||||||
|
let cr = boat.pop(from).unwrap();
|
||||||
|
temp.push(cr);
|
||||||
|
}
|
||||||
|
|
||||||
|
temp.reverse();
|
||||||
|
|
||||||
|
for cr in temp {
|
||||||
|
boat.push(to, cr);
|
||||||
|
}
|
||||||
|
});
|
||||||
|
|
||||||
|
Output::String(boat.to_string())
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue
Block a user