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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. struct p{
  5.     int x,y;
  6. }a[1005];
  7.  
  8. bool cmp(p a,p b){
  9.     return a.x<b.x;
  10. }
  11.  
  12. int main(){
  13.  
  14.     int s,n;
  15.     cin>>s>>n;
  16.  
  17.     for(int i=0;i<n;i++){
  18.         cin>>a[i].x>>a[i].y;
  19.     }
  20.  
  21.     sort(a,a+n,cmp);
  22.  
  23.     for(int i=0;i<n;i++){
  24.         if(s<=a[i].x) {
  25.             cout<<"NO\n";
  26.             return 0;
  27.         }
  28.  
  29.         s  = s+ a[i].y;
  30.  
  31.     }
  32.  
  33.     cout<<"YES\n";
  34.  
  35.  
  36.     return 0;
  37.  
  38. }
Success #stdin #stdout 0s 3484KB
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stdin
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2 5
5 1
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3 1
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stdout
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YES
https://ideone.com/SNOob6
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
secret

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