/*  ex3_2: Therefore
    Jun_JPN */

#include <stdio.h>

int main(void){

    int num, r;

    scanf("%d", &num);

    r = num % 10;   // 入力numを10で割った余り（numの1桁目数字）をrに代入

    switch (r){ // 剰余rの値によって場合分け
        case 2: case 4: case 5: case 7: case 9:
            printf("hon\n");
            break;
        
        case 0: case 1: case 6: case 8:
            printf("pon\n");
            break;
        
        case 3:
            printf("bon\n");
            break;
    }

    return 0;
}