Codeforces Round #312 (Div. 2)小结
爆炸了爆炸了。。。E题一个裸线段树没打完,A题wa了半天。。。。。。
爆炸了爆炸了。。。。爆炸了爆炸了。。。。rank270+滚粗
以后还是得多做模拟题。。。
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