Library Management System
HardProblem Description
Design classes for Book, Member, Librarian, and Transaction.
Use inheritance for different book types (Fiction, Reference) and polymorphism for borrowing rules.
Include due dates and fines.
OOP Focus: Multi-class relationships.
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.