Cod sursa(job #223721)

Utilizator alien51Fatu Alin alien51 Data 29 noiembrie 2008 09:58:51
Problema Fractii Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.31 kb
Raporteaza aceasta sursa 
#include <stdio.h>
FILE *f,*g;
long n,a,i,j;
int t;
int main()
{
f=fopen("fractii.in","r");
g=fopen("fractii.out","w");
fscanf(f,"%d",&n);
a=n*n-n+1;
for (i=2;i<=n;i++)
{j=i+1;
 while (j<=n)
 {
  t=j%i;
  if (t==0 || j%t==0 && t!=1) a-=2;
  j++;
  }
}

fprintf(g,"%d ",a);
fcloseall();
return 0;
}