Task: Program Execution
Input (English): 4, 8, ['y', 'q', '5187', '4995', 'I', '9121', 'h', 'X', 'O', '2503', 'l', '2029', 's', 'U', 'G', 'Q', '6171', 't']
Output (English): X, h, 9121, I, 4995