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Description of our problem instances and solution files is as follows;
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>>>	DATA FILES

	There are multiple headlines that identify the relevant information for upcoming lines as well as data matrices.

	+	The first headline is "# Size of Some Parameters" and the following information is given just under this heading:

		n	nc	vc	nvh	nd	nvd	nrc	npc	npp

		where;
			n:		Total # of Nodes
			nc:		# of Categories (Columns)
			vc:		Vehicle Capacity
			nvh:	# of Vehicles
			nd:		# of Depots
			nvd:	# of Vendors
			nrc:	# of Regular Customers
			npc: 	# of Premium Customers
			npp: 	# of different Premium Product Types

	+	The second headline is "# Data Matrix" that has "n" lines and "nc" columns. Each line of this matrix provides the following information:
		
		c	ci	pr	nid	 x	y	sd	stpd	beg	end
		
		where;
			c:		Category (This shows whether the corresponding node is a Depot, a Vendor or a Customer)	
					"Category" labels are as follows: Depot = 1; Vendor = 2; Customer = 3
			
			ci:		Category Index (This shows the index of each node within its Category such as (D1,V1,V2,..,C1..., C20))
					"Category_Index" labels are kept as integer numbers. For example, there will be a "3" in the first column and a "19" in the second column of the data matrix for "Customer 19" that is represented as C19
															   Similarly, there will be a "1" in the first column and a "2" in the second column of the data matrix for "Depot 2" that is represented as D2
			
			pr:		Premium/Regular (This column only belongs to the nodes which are in customer Category and it indicates that whether a customer is Premium or Regular)
					"Premium/Regular" labels are as follows: Regular Customer = 1; Premium Customer = 2
					Note: This column will be set to zero for Depots as well as Vendors
			
			nid:	Node_ID << "Customer Number" in the original instances. In other words, this represents the original label of each node in Cordeau's Instances >> 		
			x:		X coordinate of nodes
			y:		Y coordinate of nodes
			sd:		Service Duration of each node
			stpd:	Standard Product Demand of each customer << This parameter directly corresponds to the "Demand(q)" column in Cordeau's Instances for Regular Customers. However, it is manipulated for Premium Customers >>
			beg: 	Beginning of Time Window (earliest time for start of service)
			end:	End of Time Window (latest time for start of service)
			
	+	The third headline is "# avp Matrix" that has "nvd" lines and "npp" columns. This is a binary matrix and it keeps the information that which vendor supplies which product

	+	The fourth headline is "# bcp Matrix" that has "npc" lines and "npp" columns. This is also a binary matrix which shows the type of premium products that premium customers ordered

	+	The fifth headline is "# qcp Matrix" that has "npc" lines and "npp" columns. This corresponds to the requested quantity of each premium product by each premium customer

	+	The sixth headline is "# wp Matrix" that has "1" line and "npp" columns. It gives the individual consumption amount of each premium product type 

>>>	SOLUTION FILES

	This part will be provided later!