#include<iostream>
using namespace std;
class Worker
{
    protected:
    int twork;
    public:
    void totwork()
    {
        //cin>>twork;
    }
};
class IndividualWorker : public Worker
{
    protected:
    int iwork;
    public:
    void indwork()
    {
        //cin>>iwork;
        cout<<twork/iwork;
    }
};
class GroupWorker : public Worker
{
    protected:
    int nworkers, gwork;
    float gtot;
    public:
    void growork()
    {
        //cin>>nworkers;
        //cin>>gwork;
        cout << nworkers;
        int divisor=(nworkers*gwork);
        gtot=twork/divisor;
        cout<<gtot<<endl;
    }
};
int main()
{
    int twork, iwork, gwork, nworkers;
    float gtot;
    cin>>twork;
    cin>>iwork;
    cin>>nworkers;
    cin>>gworks;
    GroupWorker g;
    IndividualWorker i;
    g.totwork();
    g.growork();
    i.indwork();
}