#include<bits/stdc++.h>
#define ll long long
#define rep(i,a,n) for(int i=a;i<=n;i++)
#define per(i,n,a) for(int i=n;i>=a;i--)
#define endl '\n'
#define mem(a,b) memset(a,b,sizeof(a))
#define IO ios::sync_with_stdio(false);cin.tie(0);
using namespace std;
const int INF=0x3f3f3f3f;
const ll inf=0x3f3f3f3f3f3f3f3f;
const int mod=1e9+7;
const int maxn=1e5+5;
int main(){
	int n;cin>>n;
	int n=n%10;
	if(n==2||n==4||n==5||n==7||n==9) puts("hon");
	if(n==0||n==1||n==6||n==8) puts("pon");
	else puts("bon");
}
