#include <bits/stdc++.h>
int main(void) {
  int N;
  scanf("%d", &N);
  if (N % 10 == 3) {
    printf("bon\n");
  } else if ((N % 10 == 0) || (N % 10 == 1) || (N % 10 == 6) || (N % 10 == 8)) {
    printf("pon\n");
  } else {
    printf("hon\n");
  }
}
