#include <iostream>
using namespace std;
int main(void){
  float x, y;
  cout<<"x = ";
  cin>>x;
  cout<<"y = ";
  cin>>y;
  if(y==0)
    cout<<"Nie mozna dzielic przez 0";
  else{
    float z;
    z=x/y;
    cout<<"z = "<<z;
  };
  cout<<endl;
  char c;
  cin>>c;
}