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摘要： Janitor Troubles Problem Description While working a night shift at the university as a janitor, you absent mindedly erase a blackboard covered with e 阅读全文

摘要： Strings in the Pocket 题目链接 "http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=6012" 题意 给你两个字符串，问有多少种方法能使翻转a中一个的子串后能够和b相同 题解 分两种情况 1. a和b相同：用马 阅读全文