(Rated

Educational Codeforces Round 83 (Rated for Div. 2)A–C

　　　　题意：给出一个边数为n的等边多边形，问是否可以变成m的等边多边形。条件是同一个中心，共用原顶点。　　 […]

Educational Codeforces Round 81 (Rated for Div. 2) B. Infinite Prefixes

题目链接：http://codeforces.com/contest/1295/problem/B 题目：给定 […]

Educational Codeforces Round 80 (Rated for Div. 2) E. Messenger Simulator

可以推出 min[i]要么是i要么是1，当a序列中存在这个数是1 max[i]的话就比较麻烦了首先对于i来说 […]

Educational Codeforces Round 80 (Rated for Div. 2)

A. Deadline 题目链接：https://codeforces.com/contest/1288/pr […]

Educational Codeforces Round 72 (Rated for Div. 2)

https://www.cnblogs.com/31415926535x/p/11601964.html这场只 […]