Task: Program Execution
Input (English): 4, 4, ['C', '6527', '7921', 'A', 'a', 'p', '9977', 'a', 'K', 'f', '7227', '165', '7615', '2449', '955', 'e', 'm', 'k', '4455', '3149', '4079', 'H', '5549', 'S', '2621']
Output (English): A