input_file = '/var/data/data.txt'
output_file = '/var/result/result.txt'

def find_square_of_max(input_path, output_path):
    with open(input_path, 'r') as infile:
        numbers = [int(line.strip()) for line in infile if line.strip().isdigit()]
        if numbers:
            max_number = max(numbers)
            square_of_max = max_number ** 2
            with open(output_path, 'w') as outfile:
                outfile.write(str(square_of_max))

if __name__ == "__main__":
    find_square_of_max(input_file, output_file)