Cod sursa(job #2268508)

Utilizator Android009Pintea Andrei Octavian Android009 Data 24 octombrie 2018 21:37:00
Problema Fractii Scor 0
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.33 kb
Raporteaza aceasta sursa 
#include<bits/stdc++.h>
#include <fstream>
using namespace std;

int main()
{
	ifstream fin ("fractii.in");
	ofstream fout("fractii.out");

    int n;
    bool e=false;

    fin >> n;
    int s=1,p=0;

    for(int i=1;i<n;i++)
    for(int j=i+1;j<=n;j++){
      if(__gcd(i, j))p++;
    }
    fout << s+p*2;
	return 0;
}