CCF CSP试题 201403-2 窗口

#include<iostream>

using namespace std;

int main()
{
int n, m;
int x, y;
int tmp;
cin >> n >> m;
int num[10][4];
int key[2559][1439];
for (int i = 0; i < 2559; i++)
for (int j = 0; j < 1439; j++)
key[i][j] = 0;
for (int i = 0; i < n; i++)
{
for (int j = 0; j < 4; j++)
cin >> num[i][j];
for (int j = num[i][0]; j < num[i][2]; j++)
for (int k = num[i][1]; k < num[i][3]; k++)
key[j][k] = i + 1;
}

for (int i = 0; i < m; i++)
{
cin >> x >> y;

if (key[x][y] == 0)
cout << "IGNORED" << endl;
else
{
cout << key[x][y] << endl;
tmp = key[x][y] - 1;
for (int j = num[tmp][0]; j < num[tmp][2]; j++)
for (int k = num[tmp][1]; k < num[tmp][3]; k++)
key[j][k] = tmp + 1;
}
}

//system("pause");

}