摘要:
DescriptionYou are in a cave, a long cave! The cave can be represented by a1 x Ngrid. Each cell of the cave can contain any amount of gold.Initially y... 阅读全文
摘要:
http://acm.hust.edu.cn/vjudge/problem/viewProblem.action?id=30728一个立体方块,每个单位方块都是关闭状态,每次任两个点,以这两点为对角线的一个立方体状态都会进行一次转变,(开变成关,关变成开)如此进行k次后,问开着的灯的期望值思路:枚举... 阅读全文