Task: Program Execution
Input (English): 4, 6, ['y', '8591', '2157', 'a', '5867', 'L', '6543', 'Q', 'N', 'Z', '3049', '1745', '3921', 'X', 'u', 'h', '1245', '3703', 'y', '8039', '2121', '1977', 'S', '5515', 'y', '417']
Output (English): a, Z, h, 1977