Educational Codeforces Round 90 (Rated for Div. 2)-C. Pluses and Minuses

题目连接 题意： 有一个只含±号的字符串会通过以下处理获得一个值，请你写出一个程序知足以下条件并输出正确的res。ios res = 0 for init = 0 to inf cur = init ok = true for i = 1 to |s| res = res + 1 if s[i] == '+' cur

>>阅读原文<<