Task: Program Execution
Input (English): 2, 21, ['U', 'H', '3793', '6241', '2147', 'V', 'z', '5617', 'm', '1009', '9569', '8375', 'b', 'U', 'Y', 'D', '1187', '6245', '1549', '5725', '5815', '2595']
Output (English): 58155725154962451187DYUb837595691009m5617zV214762413793H