while n = gets do
    n = n.to_f
    if n <= 48.00
        puts "light fly"
    elsif 48.00 < n && n <= 51.00
        puts "fly"
    elsif 51.00 < n && n <= 54.00
        puts "bantam"
    elsif 54.00 < n && n <= 57.00
        puts "feather"
    elsif 57.00 < n && n <= 60.00
        puts "light"
    elsif 60.00 < n && n <= 64.00
        puts "light welter"
    elsif 64.00 < n && n <= 69.00
        puts "welter"	
    elsif 69.00 < n && n <= 75.00
        puts "light middle"
    elsif 75.00 < n && n <= 81.00
        puts "middle"
    elsif 81.00 < n && n <= 91.00
        puts "light heavy"
    elsif 91.00 < n 
        puts "heavy"
    end
            
end

