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  1. #include<bits/stdc++.h>
  2. #define ll long long
  3. #define F first
  4. #define S second
  5. using namespace std;
  6.  
  7.  
  8. //bool compare(const pair<int,int> &a,const pair<int,int> &b)
  9. //{
  10. //    if(a.F == b.F){
  11. //            return a.S > b.S;//decrease
  12. //    }
  13. //    return a.F < b.F;//increase
  14. //}
  15. int main(){
  16.     int n;
  17.     ll s;
  18.     cin>>s>>n;
  19.     vector<pair<int,int>>v(n);
  20.     for(int i=0;i<n;i++){
  21.         cin>>v[i].first>>v[i].second;
  22.     }
  23.     sort(v.begin(),v.end());
  24.  
  25.     for(int i=0;i<n;i++){
  26.         if(v[i].first<s){
  27.             s+=v[i].second;
  28.         }else{
  29.             cout<<"NO"<<endl;
  30.             return 0;
  31.         }
  32.     }
  33.     cout<<"YES"<<endl;
  34. }
Success #stdin #stdout 0.01s 5292KB
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stdin
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Standard input is empty
stdout
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YES
https://ideone.com/WTlw6f
language:
C++14 (gcc 8.3)
created:
10 days ago
visibility:
public

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