11.16
树状数组 http://codeforces.com/contest/1070/problem/C
digit sum+% dp http://codeforces.com/contest/1070/problem/A
二分 http://codeforces.com/problemset/problem/1070/E
模拟 http://codeforces.com/contest/1070/problem/G
11.12
莫比乌斯反演 http://acm.hdu.edu.cn/showproblem.php?pid=4746
11.13
莫比乌斯反演 http://acm.hdu.edu.cn/showproblem.php?pid=4675
莫比乌斯反演 http://acm.hdu.edu.cn/showproblem.php?pid=6363
11.14
树上差分+树状数组 https://codeforces.com/problemset/problem/1076/E
贪心 http://codeforces.com/problemset/problem/1076/F
辣鸡 http://codeforces.com/problemset/problem/1075/B
http://codeforces.com/gym/101911
http://codeforces.com/contest/1062
11.15
树的重心+思维 http://codeforces.com/gym/101968/problem/A
线段树+dfs序 http://codeforces.com/contest/1062/problem/E
辣鸡（4）http://codeforces.com/contest/1070
焦作银牌结束，此贴终结。。。