摘要：BaoBao and DreamGrid are playing a game using a strange button. This button is attached to an LED light (the light is initially off), a counter and a 阅读全文

摘要：TonyY是一个喜欢到处浪的男人，他的梦想是带着兰兰姐姐浪遍天朝的各个角落，不过在此之前，他需要做好规划。 现在他的手上有一份天朝地图，上面有n个城市，m条交通路径，每条交通路径都是单行道。他已经预先规划好了一些点作为旅游的起点和终点，他想选择其中一个起点和一个终点，并找出从起点到终点的一条路线亲身 阅读全文

摘要：Jingze is a big figure in California State University for his stubbornness. Because of his new failure in the last CET-4, he has decided not to solve 阅读全文

摘要：Trace There's a beach in the first quadrant. And from time to time, there are sea waves. A wave ( xxx , yyy ) means the wave is a rectangle whose vert 阅读全文