5784: BZOJ1784:[Usaco2010 Jan]island
Memory Limit:64 MB
Time Limit:1 S
Judge Style:Text Compare
Creator:
Submit:0
Solved:0
Description
一个字符矩阵,'.'为海洋,'A'为主岛,'x'为其它岛,保证所有'A'构成一个联通块,画一个圈,使得所有的'A'在圈内,所有的'x'在圈外,更具体的看样例,求这样的圈的最小周长
输入格式
Line 1: Two space-separated integers: H and W * Lines 2..H+1: Line i+1 contains contains W characters that are the elements of map row i (all '.' or 'x' or 'A')
输出格式
* Line 1: The minimum length of a path that Farmer John's cruise ship can take
样例输入
12 19 ................... ................... .....A............. .....A..x.......... ..x..A.....AAAA.... .....A.....A..A.... .....AAAAAAAA.A.... ........A.....A.... .xx...AAA...x.A.... ......A............ ...AAAAAAAAAAAAA... ...................
样例输出
62
提示
没有写明提示
题目来源
Gold