Cod sursa(job #2505366)
Utilizator | Data | 6 decembrie 2019 19:30:53 | |
---|---|---|---|
Problema | Sum | Scor | 70 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva de probleme | Marime | 0.49 kb |
#include <fstream>
using namespace std;
ifstream in("sum.in");
ofstream out("sum.out");
int main()
{
int n,x,flag2,p,d,cx;
in>>n;
for(int k=1; k<=n; k++)
{
in>>x;
flag2=0;
d=2;
p=x;
cx=x;
while(d*d<=x)
{
if(x%d==0)
{
p=p/d*(d-1);
while(x%d==0) x/=d;
}
d++;
}
if(x>1) p=p/x*(x-1);
out<<2*p*cx<<"\n";
}
return 0;
}