#include<iostream>
using namespace std;

int main(){

  /* int i = 10;
   int *p = &i;

   cout<<i<<endl;
   cout<<*p<<endl;

   cout<<&i<<endl;
   cout<<p<<endl;

   i=23;
   cout<<i<<endl;
   *p = 32;
   cout<<i<<endl;*/

   int j;
   cout<<j<<endl;

   int *p = NULL;
   *p = 50;




   return 0;
}