#include <stdio.h>
int main(){
    int N;
    scanf("%d",&N);
    int a = N%10;
    if(a == 0||a == 1 ||a == 6||a == 8){
        printf("pon\n");
    } else if(a == 2 ||a == 4||a == 5||a == 7||a == 9){
        printf("hon\n");
    } else if(a == 3){
        printf("bon\n");
    }
}