#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#define Rep(i,a,n)for(int i=(int)(a);i<(int)(n);i++)
#define rep(i,n)Rep(i,0,n)
typedef long long ll;
typedef long double ld;
#define Ma(x,y) ((x)>(y)?(x):(y))
#define mi(x,y) ((x)<(y)?(x):(y))

int main() {
	int n;
	scanf("%d", &n);
	n %= 10;
	if (n == 3)printf("bon");
	else if (n == 0 || n == 1 || n == 6 || n == 8)printf("pon");
	else printf("hon");
}