Task: Program Execution
Input (English): 18, 21, ['3249', 'E', '4385', '6867', '3881', 'S', '4959', '63', 't', '3585', '6947', 'j', 'M', '3903', 'E', 'J', 'm', '9361', 'B', 'r', 'N', 'E', 'r']
Output (English): 9361, B, r, N