苏格拉没有底

                                  A. Palindromic Twist 题目链接http://codeforces.com/contest/1027/problem/A You are given a string ss consisting of nn lowercase Latin letters. nn is even. For each posi...

原文地址：http://codeforces.com/contest/1025/problem/A Panic is rising in the committee for doggo standardization — the puppies of the new brood have been born multi-colored! In total there are 26 possibl...