链接:

http://acm.hdu.edu.cn/showproblem.php?pid=4160

 

 

代码:

#include<stdio.h>
#include<string.h>
#include<iostream>
#include<algorithm>
using namespace std;

#define N 550

/// 匹配
struct node {int w, l, h;}a[N];

int G[N][N], used[N], p[N], n;

int cmp(node n1, node n2)
{
    if(n1.w!=n2.w)
        return n1.w > n2.w;
    if(n1.l!=n2.l)
        return n1.l > n2.l;
    return n1.h > n2.h;
}

bool Find(int u)
{
    for(int i=1; i<=n; i++)
    {
       if(!used[i] && G[u][i])
       {
           used[i] = 1;
           if(!p[i] || Find(p[i]))
           {
               p[i] = u;
               return true;
           }
       }
    }
    return false;
}


int main()
{
    while(scanf("%d", &n), n)
    {
        int i, j;
        memset(a, 0, sizeof(a));
        memset(G, 0, sizeof(G));

        for(i=1; i<=n; i++)
            scanf("%d%d%d", &a[i].w, &a[i].l, &a[i].h);

        sort(a+1, a+n+1, cmp);

        for(i=1; i<=n; i++)
        {
            for(j=1; j<i; j++)
            {
                if(a[i].w<a[j].w && a[i].l<a[j].l && a[i].h<a[j].h)
                    G[i][j]=1;
            }
        }

        int ans = 0;
        memset(p, 0, sizeof(p));
        for(i=1; i<=n; i++)
        {
            memset(used, 0, sizeof(used));
            if(Find(i))
                ans++;
        }

        printf("%d\n", n-ans);
    }
    return 0;
}

 

posted on 2015-08-15 10:42  栀蓝  阅读(149)  评论(0编辑  收藏  举报

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