摘要：
uva12545 Bits Equalizer You are given two non-empty strings S and T of equal lengths. S contains the characters `0', `1' and `?', whereas T contains ` 阅读全文
摘要：
uva12546. LCM Pair Sum One of your friends desperately needs your help. He is working with a secret agency and doing some encoding stuffs. As the miss 阅读全文