还有，您确定第六关的最优解是16？我只能做到17字符，我甚至去问了deepseek但是它也做不出来16字符解。如果可以的话，可不可以告诉我答案？
Also,are you sure that the optimal solution for level six is 16?I can only achieve a 17-character solution.I even asked DeepSeek,but it couldn't come up with a 16-character solution either.If possible,could you please tell me the answer?