ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
---|---|---|---|---|
1933 | A181 [COCI2019-2020#5] Zapina | 20 / 42 | 4 | |
1799 | C20 [SDOI2016]排列计数 | 17 / 127 | 8 | |
1801 | C23 [NOI Online #2 入门组] 建设城市 | 57 / 79 | 1 | |
1400 | P1400 [提高][NOIP2016 提高组] 组合数问题 | 73 / 222 | 6 | |
1908 | P1908 牡牛和牝牛 | 81 / 128 | 2 |
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