有个c语言问题，各位大佬帮帮忙谢谢

Question

现有一片区域，饱受海水倒灌影响，每年靠海的陆地都会被淹没，给出地图，求该地区几年后会被淹没

Input

第一行两个整数n,m表示地图的大小
接下来n行，每行m个字符用来描述地图X为海岛.为海水

Output

一个整数表示几年后海岛会被全部淹没，如果永远不会被淹没则输出0

Answer 1

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