上傳作業：http://203.68.236.9/problem/b0051
https://vjudge.net/problem/UVA-806
https://onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=747
輸入範例1
8
00000000
00000000
00001111
00001111
00011111
00111111
00111100
00111000
-8
9 14 17 22 23 44 63 69 88 94 113 -1
2
00
00
-4
0 -1
0
輸出範例1
Image 1
9 14 17 22 23 44 63 69 88 94 113
Total number of black nodes = 11
Image 2
........
........
....****
....****
...*****
..******
..****..
..***...
Image 3
Total number of black nodes = 0
Image 4
****
****
****
****
解題策略
使用遞迴模擬4分枝樹。