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摘要： Codeforces Round #577 (Div. 2) 原文链接：https://www.cnblogs.com/xwl3109377858/p/11306077.html C - Maximum Median You are given an array a of n integers, w 阅读全文

摘要： Codeforces Round #577 (Div. 2) B - Zero Array You are given an array a1,a2,…,an. In one operation you can choose two elements ai and aj (i≠j) and decr 阅读全文

摘要： Codeforces Round #577 (Div. 2) A - Important Exam A class of students wrote a multiple-choice test. There are n students in the class. The test had m  阅读全文