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OCR: THE KNAPSACK PROBLEM For'j = 1 ton, the decision variable is defined by 1' : if requirement j is included in knapsack; 10. otherwise, The Knapsack problem for Step 1 can be represented by Max 24 - 2v subjectto Ech, sb. In P1; x, and 2. = >" ,y, x) represent the optimal solution and optimal value (maximum value), respectively. The 0-11 integer problem (a variant of the knapsack problem) for Step 2 can be represented by Min. Y - Est subject to In P2, t, and 1, - 2" 8; ,, represent the optimal solution and optimal value (minimum value); respectively.