Codeforces Round #762 (Div. 3), CDE

Codeforces Round #762 (Div. 3), CDE

思维题CF思维题(大多cf)提升
Educational Codeforces Round 119 (Div. 2), (C) BA-String硬着头皮做, 能做出来的

Educational Codeforces Round 119 (Div. 2), (C) BA-String硬着头皮做, 能做出来的

思维题CF思维题(大多cf)
Codeforces Round #771 (Div. 2), problem: (B) Odd Swap Sort

Codeforces Round #771 (Div. 2), problem: (B) Odd Swap Sort

思维题(大多cf)
Codeforces Round #767 (Div. 2) c d, 巧妙标记

Codeforces Round #767 (Div. 2) c d, 巧妙标记

思维题CF思维题(大多cf)贪心提升

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