Vehicle Routing Problem with Time Windows and Simultaneous Delivery and Pick-Up Service Based on MCPSO

Table 2

The distance between depot and each customer.

𝑑𝑖𝑗	0	1	2	3	4	5	6	7	8
0	0	10	9	7	8	8	8	3	4
1		0	4	9	14	18	18	13	14
2			0	5	10	14	17	12	13
3				0	5	9	15	10	11
4					0	6	13	11	12
5						0	7	10	12
6							0	6	8
7								0	2
8									0