洛谷普及试炼场之旅

A. 简单模拟

铺地毯：就是模拟

#include<cstdio>
#include<iostream>
#define maxn 10000000
using namespace std;

struct parpet{
    int x1,x2,y1,y2;
}list[maxn];

int n,a,b,c,d,ansx,ansy,ans;

bool Judge(parpet &A,int x,int y){
    return (A.x1 <= x)&&(x <= A.x2)&&(A.y1 <= y)&&(y <= A.y2);
} 

int main(){
    scanf("%d",&n);
    for(int i = 0;i < n;i++){
        scanf("%d%d%d%d",&a,&b,&c,&d);
        list[i].x1 = a;
        list[i].y1 = b;
        list[i].x2 = a+c;
        list[i].y2 = b+d;
    }scanf("%d%d",&ansx,&ansy);
    ans = -1;
    for(int i = 0;i < n;i++){
        if(Judge(list[i],ansx,ansy)) ans = i+1;
    }
    
    printf("%d",ans);
}