Cod sursa(job #2226377)
Utilizator | Data | 30 iulie 2018 09:12:13 | |
---|---|---|---|
Problema | Sum | Scor | 65 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.58 kb |
#include <fstream>
using namespace std;
ifstream fin("sum.in");
ofstream fout("sum.out");
typedef long long ll;
typedef long double ld;
const int N=10000+5;
ll phi[N];
int main()
{
for(int i=1;i<N;i++)
phi[i]=i;
for(int i=2;i<N;i++)
if(phi[i]==i)
for(int j=i;j<N;j+=i)
phi[j]/=i,phi[j]*=(i-1);
int t;
fin>>t;
while(t--)
{
int foo;
fin>>foo;
ll tourist=phi[foo];
tourist+=tourist;
tourist*=foo;
fout<<tourist<<"\n";
}
return 0;
}