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HDU——T 2119 Matrix

时间:2017-08-26 18:45:07      阅读:181      评论:0      收藏:0      [点我收藏+]

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http://acm.hdu.edu.cn/showproblem.php?pid=2119

Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 3097    Accepted Submission(s): 1429


Problem Description
Give you a matrix(only contains 0 or 1),every time you can select a row or a column and delete all the ‘1‘ in this row or this column .

Your task is to give out the minimum times of deleting all the ‘1‘ in the matrix.
 

 

Input
There are several test cases.

The first line contains two integers n,m(1<=n,m<=100), n is the number of rows of the given matrix and m is the number of columns of the given matrix.
The next n lines describe the matrix:each line contains m integer, which may be either ‘1’ or ‘0’.

n=0 indicate the end of input.
 

 

Output
For each of the test cases, in the order given in the input, print one line containing the minimum times of deleting all the ‘1‘ in the matrix.
 

 

Sample Input
3 3 0 0 0 1 0 1 0 1 0 0
 

 

Sample Output
2
 

 

Author
Wendell
 

 

Source
 

 

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格点为一的格子坐标连边
 1 #include <cstring>
 2 #include <cstdio>
 3 
 4 bool vis[110];
 5 int map[110][110];
 6 int n,m,match[110];
 7 
 8 bool find(int x)
 9 {
10     for(int y=1;y<=m;y++)
11         if(map[x][y]&&!vis[y])
12         {
13             vis[y]=1;
14             if(!match[y]||find(match[y]))
15             {
16                 match[y]=x;
17                 return true;
18             }
19         }
20     return false;
21 }
22 
23 int main()
24 {
25     for(;scanf("%d",&n)&&n;)
26     {
27         int ans=0;
28         scanf("%d",&m);
29         for(int i=1;i<=n;i++)
30             for(int j=1;j<=m;j++)
31             scanf("%d",&map[i][j]);
32         for(int i=1;i<=n;i++)
33           {
34               if(find(i)) ans++;
35               memset(vis,0,sizeof(vis));
36           }
37         printf("%d\n",ans);
38         memset(map,0,sizeof(map));
39         memset(match,0,sizeof(match));
40     }
41     return 0;
42 }

 

HDU——T 2119 Matrix

标签:print   sample   tin   lan   chmod   lines   php   arch   integer   

原文地址:http://www.cnblogs.com/Shy-key/p/7435907.html

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