啊啊啊，说错了，$codeforces$应该用$\%I64d$
by Zhang_RQ @ 2018-03-13 08:31:25
@[Zhang_RQ](/space/show?uid=31565) 感谢您的贡献！
by yjjr @ 2018-03-13 15:08:39
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by shadowice1984 @ 2018-03-14 11:13:07
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by hall_of_history @ 2018-11-03 19:11:51