CodeforcesRound#2(Div.2)[ABCDE]:Codeforces Round #2 (Div. 2)[ABCDE] ACM 题目地址:Codeforces Round #2 (Div. 2) 这场只出了两题TAT，C由于cin给fst了，D想到正解快敲完了却game over了... 掉rating掉的厉害QvQ... A - Caisa and Sugar 【模拟】