1017 - Exact cover Time Limit: 15s Memory Limit: 128MB Special Judge Submissions: 6751 Solved: 3519 Description There is an N*M matrix with only 0s and 1s, (1 <= N,M <= 1000). An exact cover is a selection of rows such that every column has a 1 in e…

题意: 给你N个包,要拿到M个东西(编号1~M每一个仅仅能有一个) 然后每一个包里有k个东西,每一个东西都有编号. 思路: 舞蹈连模板题 代码: #include"stdio.h" #include"algorithm" #include"string.h" #include"iostream" #include"queue" #include"map" #include"ve…

1017 - Exact cover 时间限制:15秒 内存限制:128兆 自定评测 5584 次提交 2975 次通过 题目描述 There is an N*M matrix with only 0s and 1s, (1 <= N,M <= 1000). An exact cover is a selection of rows such that every column has a 1 in exactly one of the selected rows. Try to find o…

1017 - Exact cover Problem's Link:   http://acm.hust.edu.cn/problem/show/1017 Mean: 给定一个由0-1组成的矩阵,是否能找到一个行的集合,使得集合中每一列都恰好包含一个1 analyse: 初学DLX. 这是DLX处理的最简单的问题,也是模板题. Time complexity: O(n*d) Source code:  #include <stdio.h> #include <string.h> #…

1017 - Exact cover Time Limit: 15s Memory Limit: 128MB Special Judge Submissions: 5851 Solved: 3092 DESCRIPTION There is an N*M matrix with only 0s and 1s, (1 <= N,M <= 1000). An exact cover is a selection of rows such that every column has a 1 in e…

1017 - Exact cover 时间限制:15秒 内存限制:128兆 自定评测 6110 次提交 3226 次通过 题目描述 There is an N*M matrix with only 0s and 1s, (1 <= N,M <= 1000). An exact cover is a selection of rows such that every column has a 1 in exactly one of the selected rows. Try to find o…

DESCRIPTION There is an N*M matrix with only 0s and 1s, (1 <= N,M <= 1000). An exact cover is a selection of rows such that every column has a 1 in exactly one of the selected rows. Try to find out the selected rows. INPUT There are multiply test ca…

Description There is an N*M matrix with only 0s and 1s, (1 <= N,M <= 1000). An exact cover is a selection of rows such that every column has a 1 in exactly one of the selected rows. Try to find out the selected rows.   DLX精确覆盖的模板题......   代码如下: //HU…

Description There is an N*M matrix with only 0s and 1s, (1 <= N,M <= 1000). An exact cover is a selection of rows such that every column has a 1 in exactly one of the selected rows. Try to find out the selected rows. Input There are multiply test ca…

Exact cover Time Limit: 15s Memory Limit: 128MB Special Judge Submissions: 6012 Solved: 3185 DESCRIPTION There is an N*M matrix with only 0s and 1s, (1 <= N,M <= 1000). An exact cover is a selection of rows such that every column has a 1 in exactly…