/*
TASK:green 4.0 32
LANG:C++
*/
#include <iostream>
#include <stdlib.h>
#include <ctime>
using namespace std;
int main()
{
  long x, y;
  int n;
  long c=0;
//  randomize();
  time_t t;
  cin>>n;
  while(n>0)
  {
     for(int i=0; i<n;i++)
       cin>>x>>y;
     c++;
     cin>>n;
  }
  srand((unsigned) time(&t));
  cout<<rand()%c+1<<endl;
  return 0;
}
