#include <iostream>
using namespace std; //

int  main () {
    int  x = 0, y = 0, z = 0;
    cout <<x<<" "<<y<<" "<<z<<" "<<endl; {
        int   y = 1, z = 1;
         cout <<x<<" "<<y<<" "<<z<<" "<<endl;{
             int  z = 2;
             cout <<x<<" "<<y<<" "<<z<<" "<<endl;
         }
    }
}