#include <stdio.h>
int main(void){
    // Your code here!
    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");
    }
    return 0;
}
