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  1. #include<vector>
  2. #include<algorithm>
  3. #include<iostream>
  4. #include<queue>
  5. #include<stack>
  6. #include<functional>
  7. using namespace std;
  8. struct data{
  9.  
  10. 	int first;
  11. 	int second;
  12. };
  13. class compare{
  14. public:
  15. 	 bool operator()( data &a ,data &b)
  16. 	 {
  17. 		 if(a.first < b.first) return true;
  18. 		 else false;
  19. 	 }
  20. };
  21.  
  22. int main()
  23. {	
  24. 	priority_queue <data , vector<data>, compare> heap;
  25. 	data temp2[] = { {5,19},{2,7},{90,9},{12,6} };
  26.  
  27. 	for(int i = 0; i <  4 ;++i)
  28. 	{		
  29.        heap.push(temp2[i]);
  30. 	}
  31. 	while(heap.empty() == false)
  32. 	{
  33. 		cout<<heap.top().first<<endl;;
  34. 		heap.pop();
  35. 	}
  36.  
  37. }
Success #stdin #stdout 0s 3228KB
comments (?)
stdin 
Standard input is empty
stdout 
12
5
2
90
https://ideone.com/Mfwjfy
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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