Pagini recente » Cod sursa (job #2655681) | Cod sursa (job #888332) | Cod sursa (job #1261668) | Cod sursa (job #555898) | Cod sursa (job #1434483)
#include<fstream>
#include<algorithm>
using namespace std;
int i,j,t,x,phi[100005];
int main()
{
ifstream cin("sum.in");
ofstream cout("sum.out");
ios_base::sync_with_stdio(0);
for(i=1;i<=(int)1e5;++i) phi[i]=i;
for(i=2;i<=(int)1e5;++i)
if(phi[i]==i) for(j=i;j<=(int)1e5;j+=i) phi[j]-=phi[j]/i;
for(cin>>t;t;--t) cin>>x,cout<<2LL*x*phi[x]<<'\n';
return 0;
}