Cod sursa(job #756452)
| Utilizator | Data | 9 iunie 2012 17:33:17 | |
|---|---|---|---|
| Problema | Sum | Scor | 0 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.37 kb |
#include<fstream>
using namespace std;
int main()
{
ifstream f("sum.in");
ofstream g("sum.out");
long v[110000],x[110000],i,j,n;f >> n;
for(i=1;i<=n;i++)f >> x[i];
for(i=1;i<=110000;i++)v[i]=i;
for(i=1;i<=110000;i++)
if(v[i]==i)
for(j=i;j<=110000;j=j+i)v[j]=v[j]/i*(i-1);
for(i=1;i<=n;i++) g << v[x[i]]*2*x[i];
f.close();g.close();
return 0;
}
