然而这道题用不到二维。。。
代码如下（自己写的，请勿copy）
```cpp
#include<iostream>
#include<cstring>
#include<cstdlib>
#include<cstdio>
using namespace std;
int a[100001],b[100001],l1[100001],l2[100001];
int main()
{
int i,n,x,y;
freopen("carpet10.in","r",stdin);
freopen("carpet10.out","w",stdout);
scanf("%d",&n);
for(i=1;i<=n;i++) scanf("%d%d%d%d",&a[i],&b[i],&l1[i],&l2[i]);
scanf("%d%d",&x,&y);
for(i=n;i>=1;i--)
if(x>=a[i] && x<=a[i]+l1[i] && y>=b[i] && y<=b[i]+l2[i])
{
printf("%d",i);
break;
}
if(i==0) printf("-1");
return 0;
}
```
by andyc_03 @ 2017-10-08 10:39:56
还有二维数组开到5000\*5000正常是不会炸的
by andyc_03 @ 2017-10-08 10:40:40