碳酸钙的01妖精的博客

B. A Lot of Joytime limit per test2.0 smemory limit per test256 MBinputstandard inputoutputstandard outputTwo boys Gena and Petya wrote on two strips of paper the same string s that ...

Duha decided to have a trip to Singapore by plane.The airplane had nn seats numbered from 11 to nn, and nn passengers including Duha which were also counted from11 to nn.The passenger with number ii...