#include <stdio.h>

int main (void)
{

    int a;

    scanf("%d",&a);
    
    if(a>=10){
        while(a<10){
        a-=10;
        }}
    
    switch (a) {
        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);

}