没有准确理解题意:移动到4个三角形是从6个移动两根直接到4个呢,还是得经过5个过渡,在5个三角形的基础上移动两根到4个? |
If you have to use all the matches. I can not do it either. However, the question does not require you to use the moved matches ![]() |
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