HDU-1069-Monkey and Banana

#include <iostream>
#include <memory.h>
#include <string>
#include <istream>
#include <sstream>
#include <vector>
#include <stack>
#include <algorithm>
#include <map>
#include <queue>
#include <math.h>
#include <cstdio>
using namespace std;

typedef long long LL;

const int MAXN = 30 * 6 + 10;
const int INF = 0x7fffffff;

struct Node
{
    int _x, _y;
    int _h;
    bool operator < (const Node & that) const {
        if (this->_x != that._x)
            return this->_x < that._x;
        return this->_y < that._y;
    }
}node[MAXN];

int main()
{
    int n;
    int a, b, c;
    int cnt = 1;
    while (cin >> n && n)
    {
        int pos = 0;
        for (int i = 1;i <= n;i++)
        {
            cin >> a >> b >> c;
            pos++, node[pos]._x = a, node[pos]._y = b, node[pos]._h = c;
            pos++, node[pos]._x = a, node[pos]._y = c, node[pos]._h = b;
            pos++, node[pos]._x = b, node[pos]._y = a, node[pos]._h = c;
            pos++, node[pos]._x = b, node[pos]._y = c, node[pos]._h = a;
            pos++, node[pos]._x = c, node[pos]._y = a, node[pos]._h = b;
            pos++, node[pos]._x = c, node[pos]._y = b, node[pos]._h = a;
        }
        sort(node + 1, node + 1 + pos);

        int res = node[1]._h;
        for (int i = 1;i <= pos;i++)
        {
            int tmp = 0;
            for (int j = 1;j < i;j++)
            {
                if (node[j]._x < node[i]._x && node[j]._y < node[i]._y)
                    tmp = max(tmp, node[j]._h);
            }
            node[i]._h += tmp;
            res = max(res, node[i]._h);
        }
        printf("Case %d: maximum height = %d\n", cnt++, res);
    }



    return 0;
}