Cod sursa(job #551413)
Utilizator | Data | 10 martie 2011 19:19:33 | |
---|---|---|---|
Problema | Sum | Scor | 70 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.38 kb |
#include<stdio.h>
#define Nmax 100009
int x,i,j,n,a[Nmax];
int main()
{
freopen("sum.in","r",stdin);
freopen("sum.out","w",stdout);
scanf("%d",&n);
for (i=1;i<=Nmax;i++)
a[i]=i;
for (i=2;i<=Nmax;i++)
if (a[i]==i)
for (j=i;j<=Nmax;j+=i)
a[j]=a[j]*(i-1)/i;
for (i=1;i<=n;i++)
{
scanf("%d",&x);
printf("%d\n",2*x*a[x]);
}
return 0;
}