#include <stdio.h>
int main(void)
{
    int N,hold;
    scanf("%d",&N);
    hold = N-N/10*10;
    switch(hold){
        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;
    }
    return 0;
}