Nu aveti permisiuni pentru a descarca fisierul grader_test12.ok
Cod sursa(job #551414)
| Utilizator | Data | 10 martie 2011 19:22:02 | |
|---|---|---|---|
| Problema | Sum | Scor | 80 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.39 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("%lld\n",(long long)2*x*a[x]);
}
return 0;
}
