hdu 1069 Monkey and Banana （最长上升子序列）

http://acm.hdu.edu.cn/showproblem.php?pid=1069

#include<cstdio>
#include<cstring>
#include<iostream>
#include<algorithm>
using namespace std;
struct Node
{
  int a,b,c,dp;
};
Node node[3000];
int cmp(Node x,Node y)
{
  if(x.a==y.a) return x.b<y.b;
  return x.a<y.a;
}

int main()
{
  int n;
  int i,j,k;
  int a,b,c;
  int cas=1;
  while(scanf("%d",&n),n)
  {
    for(i=1;i<=6*n;i++)
    {
      scanf("%d%d%d",&a,&b,&c);
      node[i].a=a;node[i].b=b;node[i].dp=node[i].c=c;i++;
      node[i].a=a;node[i].b=c;node[i].dp=node[i].c=b;i++;
      node[i].a=b;node[i].b=a;node[i].dp=node[i].c=c;i++;
      node[i].a=b;node[i].b=c;node[i].dp=node[i].c=a;i++;
      node[i].a=c;node[i].b=a;node[i].dp=node[i].c=b;i++;
      node[i].a=c;node[i].b=b;node[i].dp=node[i].c=a;
    }
    sort(node+1,node+6*n+1,cmp);
    int maxx=node[6*n].c;
    for(i=6*n-1;i>=1;i--)
    {
      for(j=i+1;j<=6*n;j++)
      {
        if(node[i].a<node[j].a&&node[i].b<node[j].b&&node[i].dp<node[i].c+node[j].dp)
          node[i].dp=node[i].c+node[j].dp;
      }
      if(node[i].dp>maxx) maxx=node[i].dp;
    }
    /*printf("ssssssssssssssssss\n");
    for(i=1;i<=6*n;i++)
    {
      printf("%d %d %d %d\n",node[i].a,node[i].b,node[i].c,node[i].dp);
    }*/

    printf("Case %d: maximum height = %d\n",cas++,maxx);
  }
  return 0;
}