Cod sursa(job #240402)

Utilizator nightwish0031Vlad Radu Cristian nightwish0031 Data 7 ianuarie 2009 16:41:55
Problema Sum Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.48 kb
#include<stdio.h>
#include<math.h>
int main()
{
long d,N,i,e,cx,lim,s,x,phi;

  freopen("sum.in","r",stdin);
  freopen("sum.out","w",stdout);

  scanf("%ld",&N);

   for (i=1;i<=N;i++)
	{
		scanf("%ld",&x);
			phi=x;
			cx=x;
			d=2;
			lim=sqrt(x)+1;
			while(x>1&&d<=lim)
			 {
			  e=0;
				while(x%d==0)
				    {e++;x/=d;}
			  if (e)
				{
				 phi=phi/d;
				 phi=phi*(d-1);

				}
				d++;
			 }
			s=2*cx*phi;
		printf("%ld\n",s);
	}



return 0;
}