fork download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. typedef long long int ll;
  4. int main() {
  5. 	// your code goes here
  6. 	int n;
  7. 	cin>>n;
  8. 	ll sum = 0;
  9. 	vector<ll> p;
  10. 	for(int i = 0 ; i< n ; i++){
  11. 		int a , b;
  12. 		cin>>a>>b;
  13. 		sum += b*n - a;
  14. 		p.push_back(b-a);
  15. 	}
  16. 	sort(p.begin(),p.end());
  17. 	reverse(p.begin(),p.end());
  18. 	for(int j = 1; j<= n ; j++){
  19. 		sum = sum + j*p[j-1];
  20. 	}
  21. 	cout<<sum<<endl;
  22. 	return 0;
  23. }
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin
copy 
5
2 3
4 5
6 7 
8 9
4 8
stdout
copy 
154
https://ideone.com/6RtLhJ
language:
C++ (gcc 8.3)
created:
18 hours 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!