摘要:
CodeForces 547D Mike and Fish https://codeforces.com/contest/547/problem/D Tutorial https://codeforces.com/blog/entry/18126 二分图,左右分别有$2 \times 10^5$个节 阅读全文
摘要:
CodeForces 576E Paingting Edges https://codeforces.com/contest/576/problem/E Tutorial https://blog.csdn.net/PoPoQQQ/article/details/48467731 首先,这一类在 阅读全文
摘要:
CodeForces 1361D Johnny and James https://codeforces.com/contest/1361/problem/D Tutorial https://codeforces.com/blog/entry/78355?f0a28=1 可以把这道题看作这样一个结 阅读全文