Cod sursa(job #1376332)

Utilizator dragos99Homner Dragos dragos99 Data 5 martie 2015 17:05:30
Problema Sum Scor 70
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.35 kb
Raporteaza aceasta sursa 
#include<fstream>
using namespace std;
int n,i,j,p,s,v[100001],x;
int main()
{
    ifstream f("sum.in");
    ofstream g("sum.out");
f>>n;
for(i=1;i<=100000;i++)
    v[i]=i-1;
for(i=1;i<=100000;i++)
    for(j=2*i;j<=100000;j=j+i)
        v[j]=v[j]-v[i];
for(i=1;i<=n;i++)
    {
        f>>x;
        g<<2*x*v[x]<<'\n';
    }
return 0;
}