Cod sursa(job #1371117)

Utilizator AndreiM1998Andrei Margeanu AndreiM1998 Data 3 martie 2015 19:14:06
Problema Fractii Scor 10
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.35 kb
Raporteaza aceasta sursa 
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("fractii.in");
ofstream g("fractii.out");
int prim(int a,int b)
{
while(a!=b)
if(a>b)
a=a-b;
else b=b-a;
return a;}
int main()
{int n,i,j,c;
f>>n;
c=2*n-1;
for(i=2;i<=n;i++)
for(j=2;j<=n;j++)
if(i!=j and prim(i,j)==1)
c++;
g<<c;
f.close();
g.close();
    return 0;
}