摘要： Problem Description：As you know, when you want to hack someone's program, you must submit your test data. However sometimes you will submit invalid da... 阅读全文

摘要： http://acm.hdu.edu.cn/contests/contest_show.php?cid=645Problem Description:Ladies and gentlemen, please sit up straight.Don't tilt your head. I'm seri... 阅读全文

摘要： Problem Description：You are given a string S consisting of lowercase letters, and your task is counting the number of substring that the number of eac... 阅读全文

摘要： Problem Description：In arithmetic and computer programming, the extended Euclidean algorithm is an extension to the Euclidean algorithm, which compute... 阅读全文

摘要： Problem Description：Read the program below carefully then answer the question.#pragma comment(linker, "/STACK:1024000000,1024000000")#include #include... 阅读全文

摘要： Problem Description：As a unicorn, the ability of using magic is the distinguishing feature among other kind of pony. Being familiar with composition a... 阅读全文

摘要： Problem Description：Goffi is doing his math homework and he finds an equality on his text book:gcd(n−a,n)×gcd(n−b,n)=n^k.Goffi wants to know the numbe... 阅读全文

摘要： A schoolboy named Vasya loves reading books on programming and mathematics. He has recently read an encyclopedia article that described the method ofm... 阅读全文

摘要： The name of one small but proud corporation consists ofnlowercase English letters. The Corporation has decided to try rebranding— an active marketing ... 阅读全文

摘要： 题目链接：http://acm.hust.edu.cn/vjudge/contest/view.action?cid=96545#problem/EDescription：Given an array withnintegers, and you are given two indicesiandj... 阅读全文