def extract_arguments(fh):
    # Read all lines from the file handle
    lines = fh.readlines()
    
    # Initialize an empty list to store all test cases
    test_cases = []
    
    index = 0
    case_number = 1
    
    while index < len(lines):
        # Read the number of vertices
        N = int(lines[index].strip())
        
        if N == 0:
            break
        
        index += 1
        vertices = []
        
        # Read the N vertices
        for _ in range(N):
            x, y = map(int, lines[index].strip().split())
            vertices.append((x, y))
            index += 1
        
        # Append the extracted test case to the list
        test_cases.append((N, vertices))
        case_number += 1
    
    return test_cases


#if __name__ == "__main__":
#    input_path = sys.argv[1]
#    with open(input_path, 'r') as fh:
#        test_cases = extract_arguments(fh)
#    f(test_cases)


#1. **Extracting Arguments**:
#   - `extract_arguments` reads the input file line by line.
#   - It constructs a list of test cases where each test case is a tuple `(case_number, N, vertices)`.
#   - Each test case ends when we reach "0" in the input.
