Cod sursa(job #349992)
Utilizator | Ion Vlad-Doru vlad.doru | Data | 22 septembrie 2009 09:31:28 |
---|---|---|---|
Problema | Sum | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.45 kb |
#include <fstream>
using namespace std;
ifstream in("sum.in");
ofstream out("sum.out");
bool v[1000000];
int main()
{
int n,nr,i,j,a[100000],ie;
in>>n;
for(i=0;i<n;i++){
in>>a[i];
}
for(i=2;i*i<=a[n];i++){
if(v[i]==0){
for(j=i*i;j<=n;j+=i){
v[j]=1;
}
}
}
for(i=0;i<n;i++){
ie=a[i];
for(j=2;j<a[i];j++){
if((v[j]==0)&&(a[i]%j==0)){
ie=ie*((j-1)/j);
}
}
nr=2*ie*a[i];
out<<nr<<"\n";
}
return 0;
}