Cod sursa(job #487715)
Utilizator | Daniel Pomeanu pmndaniel | Data | 26 septembrie 2010 11:54:04 |
---|---|---|---|
Problema | Fractii | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.5 kb |
#include <fstream.h>
int simplif (int x, int y)
{
long long i;
if (x>y)
{
for (i=2;i<=y;i++)
if (x%i==0 && y%i==0) return 0;
return 1;
}
else
{
for (i=2;i<=x;i++)
if (x%i==0 && y%i==0) return 0;
return 1;
}
}
int main ()
{
ifstream f ("fractii.in");
ofstream g ("fractii.out");
long long i,j,n,cont=0;
f>>n;
cont+=n; cont+=n-1;
for (i=1;i<=n;i++)
for (j=2;j<=n;j++)
{
if (i%j!=0 && simplif(i,j)) cont++;
if (i==j) cont--;
}
g<<cont;
}