Cod sursa(job #765321)

Utilizator Andrei.XweCobzaru Adrian-Andrei Andrei.Xwe Data 7 iulie 2012 11:53:41
Problema Sum Scor 70
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.47 kb
#include<fstream>
using namespace std;
int main()
{
	ifstream fcin("sum.in");
	ofstream fcout("sum.out");
	int n,x,phi[100005],i,j,max=-1;
	fcin>>n;
	for(i=1;i<=n;i++)
	{
		fcin>>x;
		if(x>max)
			max=x;
	}
	for(i=2;i<=max;i++)
		phi[i]=i;
	for(i=2;i<=max;i++)
		if(phi[i]==i)
			for(j=i;j<=max;j+=i)
				phi[j]/=i,phi[j]*=(i-1);
	fcin.close();
	ifstream fcin2("sum.in");
	fcin2>>n;
	while(n--)
	{
		fcin2>>x;
		fcout<<2*x*phi[x]<<"\n";
	}
	return 0;
}