Cod sursa(job #111109)
Utilizator | Data | 28 noiembrie 2007 17:35:05 | |
---|---|---|---|
Problema | Fractii | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.36 kb |
#include<fstream.h>
#include<math.h>
int main()
{long int n,i,j,nr=0,a,b,t,d;
ifstream f("fractii.in");
ofstream g("fractii.out");
f>>n; nr=n+n-1;
for(i=2;i<=n;i++)
for(j=2;j<=n;j++)
{a=i;b=j; t=0;
for(d=2;d<=a && t==0; d++)
while(a%d==0)
{a/=d;
if(b%j==0) t=1;}
if(t==0) nr++;
}
g<<nr;
f.close(); g.close();
return 0; }