Cod sursa(job #1560007)
| Utilizator | Data | 1 ianuarie 2016 13:21:04 | |
|---|---|---|---|
| Problema | Sum | Scor | 95 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.48 kb |
#include <stdio.h>
#define nmax 100010
using namespace std;
int n,x;
int fr[nmax];
long long int sum[nmax];
int main() {
freopen("sum.in","r",stdin);
freopen("sum.out","w",stdout);
scanf("%d",&n);
for (int i=1;i<=100000;i++) fr[i]=i;
for (int i=2;i<=100000;i++)
if (fr[i]==i) {
for (int j=i;j<=100000;j+=i)
fr[j]=fr[j]/i,fr[j]=fr[j]*(i-1);
}
for (int i=1;i<=n;i++) {
scanf("%d",&x); printf("%lld\n",1LL*2*x*fr[x]);
}
return 0;
}
