第三和第五个点re

#include<cstdio>
#include<cstring>
#include<algorithm>
#include<cstring>
#include<iostream>
#include<cmath>
using namespace std;
int cnt=0;
struct point{
    int x,y;
    point(int x=0,int y=0):x(x),y(y){}
};
bool operator < (const point &e,const point &w){
    if(e.y>w.y) return false;
    return true;
}
point g[10000000];
int main(){
    int q,s;
    int b,i;
    scanf("%d %d",&q,&s);
    scanf("%d %d",&b,&i);
    int a=b+i;
    for(int r=0;r<q;r++){
        scanf("%d %d",&g[r].x,&g[r].y);
    }
     sort(g,g+q);
   for(int p=0;p<q;p++){
   if(a>=g[p].x) cnt++,s=s-g[p].y;
   if(s<0)  {
   cnt--;
   break;
}
     }
     printf("%d",cnt);
}