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题目描述 Petya loves lucky numbers very much. Everybody knows that lucky numbers are positive integers whose decimal record contains only the lucky digits 阅读全文
posted @ 2018-07-26 20:24
Styx-ferryman
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题目描述 On a plane are nn points ( x_{i}xi , y_{i}yi ) with integer coordinates between 00 and 10^{6}106 . The distance between the two points with num 阅读全文
posted @ 2018-07-26 08:30
Styx-ferryman
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