摘要：
time limit per test 2.0 s memory limit per test 64 MB input standard input output standard output Omar has a deck of cards. Every card has a unique integer number written on it. He says that his cards... 阅读全文
摘要：
I. Playing with strings time limit per test 2.0 s memory limit per test 64 MB input standard input output standard output Taboush is a 10 year-old school boy. On his birthday, his parents got him a ne... 阅读全文