Cod sursa(job #2268046)
Utilizator | Data | 24 octombrie 2018 14:28:53 | |
---|---|---|---|
Problema | Sum | Scor | 0 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva de probleme | Marime | 0.6 kb |
#include <fstream>
using namespace std;
ifstream in("sum.in");
ofstream out("sum.out");
const long long VM=100000;
long long int e[100000];
void Euler()
{
e[1]=1;
for (int i = 2; i < VM; i++)
{
e[i] = i;
}
for (int i = 2; i < VM; i++)
{
if (e[i] == i)
{
for (int j = i; j < VM; j += i)
{
e[j] = e[j] / i * (i - 1);
}
}
}
}
int main()
{
int x,i,n;
in>>n;
for (int i=1;i<=n;i++)
{
in>>x;
out<<2*x*e[x]<<'\n';
}
return 0;
}