Online Shopping Cart with Discounts
HardProblem Description
Create a Product hierarchy, a ShoppingCart, and discount strategies (percentage discounts, buy-one-get-one).
Use composition and the strategy pattern so new discount rules can be added without rewriting the cart logic.
OOP Focus: Design patterns basics.
Note: This is statement-only in the current Practice version; stdout should be empty.
Input & Output Format
INPUT:
Two lines. First line: space-separated numbers for vector a.
Second line: space-separated numbers for vector b.
Second line: space-separated numbers for vector b.
OUTPUT:
A single number (the dot product).
Example
Input:
1 2 3
4 5 6
4 5 6
Output:
32
Explanation: 1×4 + 2×5 + 3×6 = 4 + 10 + 18 = 32
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Output
Run or submit to see output.