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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. vector<int> v={1,2,3} ;//{6,4,8};
  6.  
  7. priority_queue<int,vector<int>,greater<int>> pq; //min priority queue
  8. int ans=0;
  9. for(auto x:v)
  10. pq.push(x);
  11.  
  12. while(pq.size()>1)
  13. {
  14. 	int e1=pq.top();
  15. 	pq.pop();
  16. 	int e2=pq.top();
  17. 	pq.pop();
  18.  
  19. 	ans+=e1+e2;
  20.  
  21. 	cout<<e1<<" "<<e2<<endl;
  22.  
  23. 	pq.push(e1+e2);
  24. }
  25. cout<<ans<<endl;
  26.  
  27. 	return 0;
  28. }
Success #stdin #stdout 0s 5308KB
comments (?)
stdin 
Standard input is empty
stdout 
1 2
3 3
9
https://ideone.com/IqLEtd
language:
C++14 (gcc 8.3)
created:
15 days ago
visibility:
public

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