摘要： Problem Statement You are given a string S consisting of digits between 1 and 9, inclusive. You can insert the letter + into some of the positions (po 阅读全文

摘要： Problem Statement Alice, Bob and Charlie are playing Card Game for Three, as below: At first, each of the three players has a deck consisting of some 阅读全文

摘要： 今天做了AtCoder Beginner Contest 044的C题： Problem Statement Tak has N cards. On the i-th (1≤i≤N) card is written an integer xi. He is selecting one or more 阅读全文