while gets
  puts case $_.to_f.ceil
  when 0..48
    "light fly"
  when 49..51
    "fly"
  when 52..54
    "bantam"
  when 55..57
    "feather"
  when 58..60
    "light"
  when 61..64
    "light welter"
  when 65..69
    "welter"
  when 70..75
    "light middle"
  when 76..81
    "middle"
  when 82..91
    "light heavy"
  else
    "heavy"
  end
end