题解 | 铺地毯

#include <stdio.h>

int main() {
    int n, x, y;
    scanf("%d\n", &n);
    int carpet[n][4];
    for (int i = 0; i < n; ++i) {
        scanf("%d %d %d %d\n", &carpet[i][0], &carpet[i][1], &carpet[i][2],
              &carpet[i][3]);
    }
    scanf("%d %d", &x, &y);
    int index = -1;
    for (int i = 0; i < n; ++i) {
        if (carpet[i][0] <= x && carpet[i][0] + carpet[i][2] >= x &&
                carpet[i][1] <= y &&
                carpet[i][1] + carpet[i][3] >= y) {
            index = i + 1;
        }
    }
    printf("%d\n", index);
    return 0;
}