Task: Program Execution
Input (English): 18, 21, ['3339', '9089', '2541', 'K', 'l', 'F', 'g', 'G', 't', '8225', 'j', '3471', '9227', 'I', 'U', '1369', '9101', 'I', '1297', '7773', 'd', 'J', '2869', 'H']
Output (English): d37777921I