Each class has an identification name, for example Dragon or Panda. Each sales slip has the class identification name and the number of boxes sold. Here is a sample of the data:

Class Name Boxes Sold

Dragon $23$ this is the first line of the data file

Panda $8$

Tiger $13$

Tiger $7$

Dragon $5$

Panda $6$

Peacock $18$

$......$