fork download
copy 
  1. //pb4f4//
  2. #include <iostream>
  3. using namespace std;
  4. int cmmdc(int a, int b)
  5. {
  6.     while (b!=0)
  7.     {
  8.         int r;
  9.         r=a%b;
  10.         a=b;
  11.         b=r;
  12.     }
  13.     return a;
  14. }
  15.  
  16. int perechi(int A[], int n)
  17. {
  18.     int rez;
  19.     rez=0;
  20.     for (int i=0;i<n-1;i++)
  21.         for (int j=i+1;j<=n-1;j++)
  22.             if (cmmdc(A[i],A[j])==1)
  23.                 rez++;
  24.     return rez;
  25. }
  26.  
  27. int n,A[1001];
  28.  
  29. int main()
  30. {
  31.     cin>>n;
  32.     for (int i=0;i<n;i++)
  33.         cin>>A[i];
  34.     cout<<perechi(A,n);
  35.     return 0;
  36. }
  37.  
Success #stdin #stdout 0.01s 5452KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/nkl0Is
language:
C++14 (gcc 8.3)
created:
2 years 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!