liulingbo918

Selecting Courses 题意

Poj的1459题Power Network，很敏

Problem Description The French author Georges Perec (1936–1982) once wrote a book, La disparition, without the letter 'e'. He was a member of the Oulipo group. A quote from the book: Tout avait Pair

康托展开是一种特殊的哈西函数，用阶乘的线性组合来表示一个数x，即x = a[n] * n! + a[n-1] * (n-1)! + .... + a[1] * 1! , 其中0 3 * 3! + 0 * 2! + 1 * 1! , 所以可以用 [3, 0, 1] 来表示19。（网上有很多博客把康托展开定义为 X=an*(n-1)!+an-1*(n-2)!+...+ai*(i-1)!+..

时间限制:10000ms 单点时限:1000ms 内存限制:256MB Description Consider a string set that each of them consists of {0, 1} only. All strings in the set have the same number of 0s and 1s. Write a program to find and