fork download
copy 
  1. #include <iostream>
  2. #include <vector>
  3. #include <algorithm>
  4. using namespace std;
  5.  
  6. int main() {
  7. 	cin.tie(0);
  8. 	cout.tie(0);
  9. 	ios::sync_with_stdio(0);
  10.  
  11. 	int N;
  12. 	int answer = 0;
  13. 	vector<int> a, b;
  14.  
  15. 	cin>>N;
  16. 	for(int i=0;i<N;i++){
  17. 		int number;
  18. 		cin>>number;
  19. 		a.push_back(number);
  20. 	}
  21. 	for(int i=0;i<N;i++){
  22. 		int number;
  23. 		cin>>number;
  24. 		b.push_back(number);
  25. 	}
  26. 	sort(a.begin(), a.end(), greater<int>());
  27. 	sort(b.begin(), b.end());
  28.  
  29. 	for(int i=0;i<N;i++){
  30. 		answer += a[i]*b[i];
  31. 	}
  32. 	cout<<answer<<'\n';
  33.  
  34. 	return 0;
  35. }
Success #stdin #stdout 0s 5308KB
comments (?)
stdin
copy 
3
1 1 3
10 30 20
stdout
copy 
80
https://ideone.com/7sZSyn
language:
C++ (gcc 8.3)
created:
169 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!