摘要：Though Rujia Liu usually sets hard problems for contests (for example, regional contests likeXi’an 2006, Beijing 2007 and Wuhan 2009, or UVa OJ contes 阅读全文

摘要：Feel Good Time Limit: 3000MS Memory Limit: 65536K Total Submissions: 12409 Accepted: 3484 Case Time Limit: 1000MS Special Judge Description Bill is de 阅读全文

摘要：There is a bag-like data structure, supporting two operations: Throw an element x into the bag. Take out an element from the bag. Given a sequence of 阅读全文

摘要：Product Time Limit:3000MS Memory Limit:0KB 64bit IO Format:%lld & %llu Submit Status Description The problem is to multiply two integers X, Y. (0<=X,Y 阅读全文

摘要：Palindromes Time Limit:3000MS Memory Limit:0KB 64bit IO Format:%lld & %llu Submit Status Description A regular palindrome is a string of numbers or le 阅读全文