Task: Program Execution
Input (English): 1, 2, ['R', 'K', '8769', '1743', '3149', 'c', 'v', '7813', 'A', 'x', 'm', 'q', 'c', '3923', 'Q', '7985', 'u', 'y', 'f', '8155']
Output (English): K, R