题解 | 铺地毯

#include <stdio.h>

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