#include <stdio.h>

int main(){
	
	int N;
	scanf("%d", &N);
	
	if(N % 10 == 2 || N % 10 == 4 || N % 10 == 5 || N % 10 == 7 || N % 10 == 9){
		printf("hon");
	}
	
	else if(N % 10 == 0 || N % 10 == 1 || N % 10 == 6 || N % 10 == 8 ){
		printf("pon");
	}
	
	else if(N % 10 == 3){
		printf("bon");
	}
	
	return 0;
	
}