#include <bits/stdc++.h>
using namespace std;
long long range(long long L) {
  switch (L & 3) {
    case 0:
      return L;
    case 1:
      return 1;
    case 2:
      return L + 1;
    case 3:
      return 0;
  }
}
int main() {
  for (int N; cin >> N;) {
    long long sum = 0;
    for (int i = 0; i < (int)(N); ++i) {
      long long m, x;
      cin >> x >> m;
      long long b = range(x - 1);
      long long a = range(x + m - 1);
      sum ^= b;
      sum ^= a;
    }
    if (sum == 0)
      cout << "bolik" << endl;
    else
      cout << "tolik" << endl;
  }
  return 0;
}
