摘要：
http://acm.split.hdu.edu.cn/showproblem.php?pid=2196 Computer Computer Description A school bought the first computer some time ago(so this computer's 阅读全文
摘要：
http://acm.split.hdu.edu.cn/showproblem.php?pid=1520 Anniversary party Problem Description There is going to be a party to celebrate the 80-th Anniver 阅读全文