the number of logs, and l is the average log length.
Note edit distance is the minimum number of operations (insertdeletereplace a character) required to transform one string into the other, please refer to
http://en.wikipedia.org/wiki/Edit_distance for more details.
Multiple lines of non-empty strings.
The count of the most frequent logs.
Logging started for id:1
Module ABC has completed its job
Module XYZ has completed its job
Logging started for id:10
Module has completed its job