Cod sursa(job #890433)
Utilizator | Data | 25 februarie 2013 08:35:29 | |
---|---|---|---|
Problema | Sum | Scor | 0 |
Compilator | cpp | Status | done |
Runda | leiten1 | Marime | 0.41 kb |
#include<fstream>
using namespace std;
int i, j, n, x, e[100001];
int main()
{ ifstream cin("sum.in");
ofstream cout("sum.out");
cin>>n;
for(i=2; i<=n; i++)
e[i]=i;
for(i=2; i<n; i++)
if(e[i]==i)
for(j=i; j<n; j=j+i)
e[j]=e[j]/i*(i-1);
for(i=1;i<=n;i++)
{
cin>>x;
cout<<long long(e[x]*2*x)<<" ";
}
return 0;
}