Pagini recente » Cod sursa (job #289387) | Cod sursa (job #1011015) | Cod sursa (job #2490390) | Cod sursa (job #337894) | Cod sursa (job #766000)
Cod sursa(job #766000)
#include <cstdio>
using namespace std;
const int N = 100010;
int n, x;
int p[N];
void preproceseaza()
{
for(int i = 1; i < N; ++i)
p[i] = i;
for(int i = 2; i < N; ++i)
if(p[i] == i)
for(int j = i; j <= N; j += i)
p[j] = (p[j] / i) * (i - 1);
}
int main()
{
preproceseaza();
freopen ("sum.in", "r", stdin);
freopen ("sum.out", "w", stdout);
scanf("%d", &n);
for(int i = 1; i <= n; ++i) {
scanf("%d", &x);
printf("%lld\n", 2 * (long long)p[x] * x);
}
}