Task: Program Execution
Input (English): 15, 18, ['2349', 'j', 'R', 'F', '1457', 'B', '3699', 'l', '6259', '1807', 'V', '7539', 'a', '2403', 'q', '7121', 'd', '6541', 'G', '5787', '2491', '3051', 'Y', 'i']
Output (English): 6541, d, 7121, q