CodeForces 1406 - Codeforces Round #670 (Div. 2)
一場 div. 2 就能超過大號這樣。 比賽結束前 5min E 交上去 WA 了，於是棄了，看了眼 ...
原文：Codeforces Round #670 (Div. 2) 深夜掉分（A - C題補題）
A. Subset Mex https: codeforces.com contest problem A Example input output Note In the first test case, A , , ,B , , is a possible choice. In the second test case, A , , ,B is a possible choice. In t ...
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人生巔峰，這是我第一次 \(\textrm{AK div2}\)！ 一場 \(\textrm{div2}\) 讓我信心大增，感謝中國同胞!!! Link \(\textrm{to Codeforces}\)。 Contest A. Subset Mex Legend 給定 ...
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