This is very challenging since Smith is having trouble spotting Wild Bill from this vantage point. The grass in front of Smith looks like a string of n (1 <= n <= 50,000) parentheses; for example: )((()())()) .

Smith knows that Wild Bill 1's hind legs look just like an adjacent pair of left parentheses ((, and that Wild Bill 1s front legs look exactly like a pair of adjacent right parentheses )).