message: Update number-of-valid-words-for-each-puzzle.cpp
diff: -// Time: O(n*l + m*L), m is the number of puzzles, L is the length of puzzles,
  -// n is the number of words, l is the max length of words
  +// Time: O(n*l + m*L), m is the number of puzzles, L is the length of puzzles
  +// , n is the number of words, l is the max length of words
  // Space: O(L!)
  class Solution {
  @@ -75,8 +75,8 @@ private:
  };
  };
  -// Time: O(m*2^(L-1) + n*(l+m)), m is the number of puzzles, L is the length of puzzles,
  -// n is the number of words, l is the max length of words
  +// Time: O(m*2^(L-1) + n*(l+m)), m is the number of puzzles, L is the length of puzzles
  +// , n is the number of words, l is the max length of words
  // Space: O(m*2^(L-1))
  class Solution2 {
  public:
  