Task: Program Execution
Input (English): 3, 3, ['2565', '4001', 'l', '3471', '9113', 'B', 'F', '2941', 'c', 'W', 'Y', 'X', 'x', 'V', 'U', 'R', '823', 'I', '9957']
Output (English): l, B, c, X, U, I