#include <iostream>
using namespace std;
int main()
{
  int i=0,j=0,n,x,y=0,o=0;
  int y[3][3] = { { 0, 1, 2 }, { 3, 4, 5 },{6,7,8} };
  cin >> n,x;
  for ( i ; i <= n; i++)
  {

    for (j; j <= n; j++)

    if (n == y[i][j])
      cout << i;
  }



  return 0;


}