[codeforces 1287A] Angry Students 字符串

[codeforces 1287A] Angry Students 字符串app 总目录详见https://blog.csdn.net/mrcrack/article/details/103564004.net 在线测评地址https://codeforces.com/contest/1287/problem/Acode Problem Lang Verdict Time Memory A - A

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