In a supplier-retailer supply chain, the demand of each retailer, the capacity of each supplier, and the unit cost in rupees of material supply from each supplier to each retailer are tabulated below. The supply chain manager wishes to minimize the total cost of transportation across the supply chain.
Retailer I
Retailer II
Retailer III
Retailer IV
Capacity
Supplier A
11
16
19
13
300
Supplier B
5
10
7
8
300
Supplier C
12
14
17
11
300
Supplier D
8
15
11
9
300
Demand
300
300
300
300
The optimal cost of satisfying the total demand from all retailers is ____rupees (answer in integer).