Editorial - AtCoder Regular Contest 225

Contest Duration: 2026-07-19 21:00:00+0900 - 2026-07-19 23:00:00+0900 (local time) (120 minutes) Back to Home

Editorial

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Overall Editorial

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A - Four Coloring

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B - Independent Nim

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C - K Spanning Tree

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D - Gap Swap (easy)

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E - Gap Swap (hard)

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