当前（2023年3月25日20点05分），759的测试用例4和5的答案都是Bad placement.，但，这是不对的。

它们的正确答案应该是There are 134 ships.和There are 182 ships.

用例4的输入：

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用例5的输入：

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这两个测试用例，都“不存在两艘船是接触的”，所以，都不应该输出Bad placement.

谢谢老师给的用例。

2023.4.1增加：2023.3.31 23:30:00已更新为正确的测试用例