cf #309a A - Kyoya and Photobooks

http://codeforces.com/contest/556/problem/C 果然一晚上不睡觉会导致读错题么… 需要注意的是 如果有一个是 1 2 4 6 那么 1,2是不必拆开的….

http://codeforces.com/problemset/problem/548/A 水题。分割成K个，每个串判断是否回文，如果都是就yes，否则no

B. Tavas and SaDDas time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Once again Tavas started eating coffee mix without water! Keione told him that it smells awful, but he didn’t stop doing that. That’s why Keione told his smart friend, SaDDas to punish him! SaDDas took Tavas’ headphones and told him: “If you solve the following problem, I’ll return it to you.”

wa了两次，原因是在同一个点可能有多个基地。。。 所以用set 是错误的，应该用multiset