Shi realized that he was almost out of money, even renting Shitalian lands. Shi was walking on a street, while thinking of a way to recover his fortune. In his ...

SmallR is an archer. SmallR is taking a match of archer with Zanoes. They try to shoot in the target in turns, and SmallR shoots first. The probability of shoot...

In this problem your goal is to sort an array consisting of n integers in at most n swaps. For the given array find the sequence of swaps that makes the array s...

http://acm.hust.edu.cn/vjudge/contest/view.action?cid=102419#problem/EDescriptionAn infinitely lon

http://acm.hust.edu.cn/vjudge/contest/view.action?cid=102419#problem/AIn an open credit system, the

In Absurdistan, there are n towns (numbered 1 through n) and m bidirectional railways. There is also an absurdly simple road network — for each pair of differen...

DescriptionWhen Xellos was doing a practice course in university, he once had to measure the intensity of an effect that slowly approached equilibrium. A good ...

Kevin Sun wants to move his precious collection of n cowbells from Naperthrill to Exeter, where there is actually grass instead of corn. Before moving, he must ...

Today Patrick waits for a visit from his friend Spongebob. To prepare for the visit, Patrick needs to buy some goodies in two stores located near his house. The...

某国为了防御敌国的导弹袭击，发展出一种导弹拦截系统。但是这种导弹拦截系统有一个缺陷：虽然它的第一发炮弹能够到达任意的高度，但是以后每一发炮弹都不能高于前一发的高度。某天，雷达捕捉到敌国的导弹来袭。由于该系统还...