import os

def find_smallest_number_and_cube(input_file, output_file):
    # Проверка, существует ли файл data.txt
    if not os.path.exists(input_file):
        print(f"File {input_file} does not exist.")
        return

    # Чтение чисел из файла
    with open(input_file, 'r') as f:
        numbers = [int(line.strip()) for line in f.readlines()]
    
    if numbers:
        smallest_number = min(numbers)
        result = smallest_number ** 3

        # Запись результата в result.txt
        with open(output_file, 'w') as f_out:
            f_out.write(str(result))

        print(f"Saved the cube of the smallest number {smallest_number} to {output_file}")
    else:
        print(f"No numbers found in {input_file}")

if __name__ == "__main__":
    find_smallest_number_and_cube('/var/result/data.txt', '/var/result/result.txt')