johnson.expected

boost库提供标准的C++ API 配合dev c++使用,功能更加强大

	0	1	2	3	4	5	
0 ->	0	0	-1	-5	0	-4	
1 ->	inf	0	1	-3	2	-4	
2 ->	inf	3	0	-4	1	-1	
3 ->	inf	7	4	0	5	3	
4 ->	inf	2	-1	-5	0	-2	
5 ->	inf	8	5	1	6	0