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  1. #include <iostream>
  2. #include <algorithm>
  3. #include <vector>
  4. using namespace std;
  5.  
  6. int main()
  7. {
  8.     ios_base::sync_with_stdio(false);cin.tie(0);
  9.     int n;
  10.     cin>>n;
  11.     vector<long long>a(n);
  12.     vector<long long>b(n);
  13.     for(int i=0;i<n;i++)cin>>a[i];
  14.     for(int i=0;i<n;i++)cin>>b[i];
  15.     sort(a.begin(),a.end());
  16.     sort(b.begin(),b.end());
  17.     vector<long long>::iterator low;
  18.     long long p;
  19.     long long sum=0;
  20.     for(int i=0;i<n;i++){
  21.         low=upper_bound(b.begin(),b.end(),a[i]);///ako su isti sabiram
  22.         p=low-b.begin();
  23.         sum+=(2*p-n)*a[i];
  24.  
  25.     }
  26.     for(int i=0;i<n;i++){
  27.         low=upper_bound(a.begin(),a.end(),b[i]-1);///ako su isti oduzimam ih
  28.         p=low-a.begin();
  29.         sum+=(2*p-n)*b[i];
  30.     }
  31.     cout<<sum;
  32.     return 0;
  33. }
Success #stdin #stdout 0s 15232KB
comments (?)
stdin 
3
4	2	8
2	7	3
stdout 
24
https://ideone.com/zLnqlC
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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