message: Update number-of-ways-to-form-a-target-string-given-a-dictionary.cpp
diff: -// Time: O(l * (w + n))
  +// Time: O(l * (w + n)), l is the length of a word, w is the number of words, n is the length of target
  // Space: O(n)
  // optimized from Solution2
  @@ -22,7 +22,7 @@ public:
  }
  };
  -// Time: O(l * (w + n))
  +// Time: O(l * (w + n)), l is the length of a word, w is the number of words, n is the length of target
  // Space: O(n)
  class Solution2 {
  public:
  