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[Hello 2020] C. New Year and Permutation (组合数学) C. New Year and Permutation time limit per test 1 second memory limit per test 1024 megabytes input st 阅读全文
posted @ 2020-02-01 16:27
茄子Min
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[Educational Codeforces Round 81 (Rated for Div. 2)]E. Permutation Separation(线段树,思维,前缀和) E. Permutation Separation time limit per test 2 seconds memo 阅读全文
posted @ 2020-02-01 00:23
茄子Min
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