Task: Program Execution
Input (English): 21, 21, ['Q', 'f', '5151', 'X', 'L', '8027', '9247', 'p', '4753', '4937', '3163', '4045', '3549', '6523', 'K', 'K', '4847', '4025', 'E', 's', 'A', '3453', '8493', '1885']
Output (English): A