需要刷/补的题

POJ1661

http://poj.org/problem?id=1661

HDU1074

http://acm.hdu.edu.cn/showproblem.php?pid=1074

Codeforce879C

二进制构造

http://codeforces.com/contest/879/problem/C

HDU4578　　

线段树的多重处理

http://acm.hdu.edu.cn/showproblem.php?pid=4578

 状压DP需要补的题：

POJ1795

http://poj.org/problem?id=1795

codeforces 453B

https://codeforces.com/problemset/problem/453/B

BZOJ4197

https://www.lydsy.com/JudgeOnline/problem.php?id=4197

codeforces 774C

https://codeforces.com/problemset/problem/744/C

想补的奇奇怪怪的题

https://ac.nowcoder.com/acm/contest/217/B?&headNav=acm

https://codeforces.com/gym/102028/problem/F

http://acm.hdu.edu.cn/showproblem.php?pid=5305

https://codeforces.com/contest/1114/problem/F