Pagini recente » Cod sursa (job #1057383) | Cod sursa (job #2363870) | Cod sursa (job #2476030) | Cod sursa (job #3192531) | Cod sursa (job #2628938)
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin ("sum.in");
ofstream fout ("sum.out");
int n, i, sum = 0, m, j;
int v[200002];
int main()
{
fin>>n;
for(i = 1; i <= 100000; i++)
v[i] = i;
for(i = 2; i <= 100000; i++)
if(v[i] == i)
for(j = i; j <= 100000; j=j+i)
v[j] /= i, v[j] *= (i - 1);
for(i = 1; i <= n; i++)
{
fin>>m;
fout<<2 * m * v[m]<<'\n';
}
return 0;
}