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Codeforces Round #436 (Div. 2) C. Bus A bus moves along the coordinate line Ox from the point x = 0 to the point x = a. After starting from the point 阅读全文
摘要：
因为难得又一次CF的比赛是非常清真的傍晚，超级少见啊 所以当然要打啦，于是rank:87，rating+=76，滞留在上紫的边缘 下面把几道觉得还不错的题目来总结一下 B.Polycarp and Letters Polycarp loves lowercase letters and dislik 阅读全文