问题 G: Friends number

问题 G: Friends number 时间限制: 1 Sec  内存限制: 128 MB 提交: 7  解决: 6 [提交] [状态] [讨论版] [命题人:外部导入]php 题目描述less   Paula and Tai are couple. There are many stories between them. The day Paula left by airplane, Tai
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