Cod sursa(job #218702)
Utilizator | Data | 3 noiembrie 2008 09:27:06 | |
---|---|---|---|
Problema | Fractii | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.31 kb |
#include <fstream.h>
int main()
{ int i,j,fr,x,y,r;
long n;
ifstream f("fractii.in");
ofstream g("fractii.out");
f>>n;
fr=1;
for (i=1;i<n;i++)
for (j=i+1;j<=n;j++)
{x=i;
y=j;
do {
r=x%y;
x=y;
y=r;
} while (r=0);
if (x==1) fr+=2;
}
g<<fr;
f.close();
g.close();
return 0;
}