Buttercola: Zenefits: Find Lake



Buttercola: Zenefits: Find Lake

Zenefits: Find Lake

0表示水，1表示陆地，小哥一直强调lake是只被同一个island围绕的水，边界不算lake。后来冷静了想想，如果是lake的话，也只能被同一个island包围吧。

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