Task: Program Execution
Input (English): 7, 16, ['U', 'Q', '403', 'l', '8867', 'H', 'O', 'T', '4501', '5273', '9721', '6861', 'p', '4715', 'j', '7315', '4253', '1377', 'Y', '3911', 'x']
Output (English): 5137j5174p1686127937251054TO