λFPAI
Practice/File System Simulator

File System Simulator

Hard

Problem Description

Model File, Folder, and Drive using composition (folders contain files/folders).

Add operations like copy(), delete(), and search().

Support different file types (Text, Image).

OOP Focus: Recursive composition.

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.
OUTPUT:
A single number (the dot product).

Example

Input:
1 2 3
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.