摘要：
AtCoder Beginner Contest 158 地址：https://atcoder.jp/contests/abc158/tasks A - Station and Bus 题意：AB之间通车，给三个字符，问能否通车，水题，只要不全是A 或者全是B都能通车 #include<bits/s 阅读全文
摘要：
A-Leftbest 原题： Jack is worried about being single for his whole life, so he begins to use a famous dating app. In this app, the user is shown single m 阅读全文