Mai intai trebuie sa te autentifici.
Cod sursa(job #1099718)
Utilizator | Data | 6 februarie 2014 10:52:40 | |
---|---|---|---|
Problema | Sum | Scor | 85 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.43 kb |
#include<fstream>
using namespace std;
ifstream in("sum.in");
ofstream out("sum.out");
const int nmax = 100001;
long long v[nmax], n, x;
int main(){
int player_unu=0;
for(int i = 2; i<nmax; i++)
v[i] = i;
for(int i = 2; i<nmax; i++)
if(v[i]==i)
for(int j = i; j<nmax; j += i)
v[j] = v[j]/i*(i-1);
in>>n;
for(int i = 0; i<n; i++)
{
in>>x;
out<<2 * x * v[x]<<'\n';
}
return player_unu;
}