EOJ 1047 Guardian of Decency

EOJ 1047 http://acm.cs.ecnu.edu.cn/problem.php?problemid=1047

POJ 2771 http://poj.org/problem?id=2771

二分匹配 不说了，直接上代码

 

  1 #include <iostream>
  2 #include <cstdio>
  3 #include <cstring>
  4 #include <string>
  5 #include <algorithm>
  6 #include <vector>
  7 #include <cmath>
  8 using namespace std;
  9 
 10 #define MAXN 505
 11 struct node
 12 {
 13     int h;
 14     char music[101], sport[101];
 15 };
 16 node boy[MAXN], girl[MAXN];
 17 int nb, ng;
 18 int g[MAXN][MAXN];
 19 int match[MAXN];
 20 int f[MAXN];
 21 
 22 bool dfs(int u)
 23 {
 24     for (int i = 0; i < nb; i++)
 25         if (g[u][i] && !f[i])
 26         {
 27             f[i] = 1;
 28             if (match[i] == -1 || dfs(match[i]))
 29             {
 30                 match[i] = u;
 31                 return true;
 32             }
 33         }
 34     return false;
 35 }
 36 
 37 int hungary()
 38 {
 39     int ans = 0;
 40     for (int i = 0; i < ng; i++)
 41     {
 42         memset(f, 0, sizeof(f));
 43         if (dfs(i))
 44             ans++;
 45     }
 46     return ans;
 47 }
 48 
 49 void init()
 50 {
 51     memset(g, 0, sizeof(g));
 52     memset(match, -1, sizeof(match));
 53     ng = 0;
 54     nb = 0;
 55 }
 56 
 57 int main()
 58 {
 59     int T, x, N;
 60     char c, a[100], b[100];
 61     scanf("%d", &T);
 62     while (T--)
 63     {
 64         init();
 65         scanf("%d", &N);
 66         for (int i = 0; i < N; i++)
 67         {
 68             scanf("%d", &x);
 69             getchar();
 70             c = getchar();
 71             scanf("%s%s", a, b);
 72             if (c == 'M')

 73             {
 74                 girl[ng].h = x;
 75                 strcpy(girl[ng].music, a);
 76                 strcpy(girl[ng].sport, b);
 77                 ng++;
 78             }
 79             else
 80             {
 81                 boy[nb].h = x;
 82                 strcpy(boy[nb].music, a);
 83                 strcpy(boy[nb].sport, b);
 84                 nb++;
 85             }
 86         }
 87         for (int i = 0; i < ng; i++)
 88             for (int j = 0; j < nb; j++)
 89             {
 90                 if (abs(girl[i].h - boy[j].h) > 40)
 91                      continue;  
 92                 if (strcmp(girl[i].music, boy[j].music))  
 93                     continue;
 94                 if (strcmp(girl[i].sport, boy[j].sport) == 0)  
 95                        continue;
 96                    g[i][j] = 1;    
 97             }
 98         int ans = hungary();
 99         printf("%d\n", N - ans);
100     }
101     return 0;
102 }
View Code


 

posted on 2013-07-04 22:45  KimKyeYu  阅读(206)  评论(0)  编辑  收藏  举报

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