/*  ex3_2
    B30095    */
#include <stdio.h>

int main(void){
    int numOfPencils;
    scanf("%d", &numOfPencils);

    switch (numOfPencils % 10){  // ones' place
        case 2: case 4: case 5: case 7: case 9:
            printf("hon");
            break;
        case 0: case 1: case 6: case 8:
            printf("pon");
            break;
        case 3:
            printf("bon");
            break;
        default:
            break;
    }

    return 0;
}