很有意思。
看看。。。。。。。。。。。。。。。。
分解出来吧
ggggggggggggggggggggg
vvvvvvvvvvvvvvvvvvvvvvvv
00000000000000000000
vvvvvvvvvvvvvvvvvvvvvvvvvv
vvvvvvvvvvvvvvvvvvvv
vvvvvvvvvvvvvvvvvvvvvv
xxxxxxxxxxxxxxxxxxxxxxxx
ssssssssssssssssssssssssssss
