#include<iostream>
using namespace std;
int main(){
	double w;
	while(cin>>w){
		if(w<=48.00)
			cout<<"light fly"<<endl;
		else if(w<=51.00)
			cout<<"fly"<<endl;
		else if(w<=54.00)
			cout<<"bantam"<<endl;
		else if(w<=57.00)
			cout<<"feather"<<endl;
		else if(w<=60.00)
			cout<<"light"<<endl;
		else if(w<=64.00)
			cout<<"light welter"<<endl;
		else if(w<=69.00)
			cout<<"welter"<<endl;
		else if(w<=75.00)
			cout<<"light middle"<<endl;
		else if(w<81.00)
			cout<<"middle"<<endl;
		else if(w<=91.00)
			cout<<"light heavy"<<endl;
		else if(w>91.00)
			cout<<"heavy"<<endl;
	}
		return 0;
	}