Pagini recente » Cod sursa (job #576950) | Cod sursa (job #1558429) | Cod sursa (job #2944248) | Cod sursa (job #811019) | Cod sursa (job #2787162)
#include <bits/stdc++.h>
using namespace std;
ifstream fin("sum.in");
ofstream fout("sum.out");
int phi[100002] , n , x;
int main()
{
int i , j;
for(i = 1 ; i <= 100000 ; i++)
phi[i] = i;
for(i = 1 ; i <= 100000 ; i++)
for(j = i * 2 ; j <= 100000 ; j += i)
phi[j] -= phi[i];
fin >> n;
while(n--)
{
fin >> x;
fout << 1LL*2*x*phi[x] << "\n";
}
return 0;
}