![[codeforces 1324D] Pair of Topics 分而治之+排列组合](/uploads/reation/bcimg8.png)
[codeforces 1324D] Pair of Topics 分而治之+排列组合
Codeforces Round #627 (Div. 3) 比赛人数6434[codeforces 1324C] Frog Jumps 一直向右+边界处理总目录详见https://blog.csdn.net/mrcrack/article/details/103564004也在线测评地址http://codeforces.com/contest/1324/problem/D...
