Gym 10032 J Triatrip
题目链接:http://codeforces.com/gym/100342 题意:给你一幅有向图,找三元环的数 […]
题目链接:http://codeforces.com/gym/100342 题意:给你一幅有向图,找三元环的数 […]
题目链接:https://apc001.contest.atcoder.jp/tasks/apc001_d 题 […]
题目链接:https://arc090.contest.atcoder.jp/tasks/arc090_b 题 […]
题目链接:http://acm.zjnu.edu.cn/xiaosai_tongbu/contests/100 […]
题目链接:https://csacademy.com/contest/archive/task/bad-tri […]