他说闭合圈,那圆环算不算?比如:
输入:
8
0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 0
1 0 0 0 0 0 1 0
1 0 1 1 1 0 1 0
1 0 1 0 1 0 1 0
1 0 1 1 1 0 1 0
1 0 0 0 0 0 1 0
1 1 1 1 1 1 1 0
输出:
0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 0
1 2 2 2 2 2 1 0
1 2 1 1 1 2 1 0
1 2 1 0 1 2 1 0
1 2 1 1 1 2 1 0
1 2 2 2 2 2 1 0
1 1 1 1 1 1 1 0