Cod sursa(job #3362022)
| Utilizator | Data | 31 iulie 2026 19:32:18 | |
|---|---|---|---|
| Problema | Sum | Scor | 100 |
| Compilator | cpp-64 | Status | done |
| Runda | Arhiva de probleme | Marime | 0.51 kb |
#include <fstream>
using namespace std;
ifstream fin("sum.in");
ofstream fout("sum.out");
int phi(int n)
{
int r=n,d=2;
while(n>1)
{
if(n%d==0)
{
r=r/d*(d-1);
while(n%d==0)
n/=d;
}
d++;
if(d*d>n)
d=n;
}
return r;
}
int main()
{
int n,x;
fin>>n;
for(int i=0; i<n; i++)
{
fin>>x;
long long s=2LL*x*phi(x);
fout<<s<<'\n';
}
return 0;
}
