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# 6689. $N^2$ 数码游戏
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The problem was used in the following contests:
IOI 2023 中国国家队集训@威海 Day 5
Upload a .zip file containing puzzle1.out,puzzle2.out,puzzle3.out,puzzle4.out,puzzle5.out,puzzle6.out,puzzle7.out,puzzle8.out,puzzle9.out,puzzle10.out:
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