密码 : 020210720


A - This is an interesting question By 刘鑫龙

B - Check-in question? By 葛云霄

C - A magical problem of number theory By 李德旺

D - The Legend of the Elevator By 王俊越

E - Easy genes By 杨熠辰


2021/7/20 Vjudge 训练赛  ABCDE题解

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