Task: Program Execution
Input (English): 19, 20, ['8101', '9073', '3039', 'R', '5241', '8669', '2589', '2841', '2595', 'Y', '5465', 'N', 'u', 'X', 'U', 'Y', '4411', '9217', 'O', '6865', 'q', '2625', '5297', 's']
Output (English): 6865O