Tramvaie

#include <fstream>
#define NMAX 1000007
using namespace std;
int phi[NMAX],v[NMAX];

int main()
{
    int t;
    ifstream f("tramvaie.in");
    f>>t;
    int maxx=0;
    for(int i=1;i<=t;++i)
        f>>v[i],maxx = max(maxx, v[i]);
    f.close();
    phi[1]=1;
    for(int i=2;i<=maxx;++i)
        phi[i]=i-1;
    for(int i=2;i<=maxx;++i)
        for(int j=2*i;j<=maxx;j+=i)
            phi[j]-=phi[i];
    ofstream g("tramvaie.out");
    for(int i=1;i<=t;++i)
        g<<phi[v[i]]<<' ';
    g.close();
    return 0;
}