Task: Program Execution
Input (English): 4, 5, ['9899', '8063', 'K', 'B', 'B', '9303', 'P', 'h', 'p', 'C', 'z', '6589', 'p', 'H', 'K', 'z', '7981', '2221', 'R']
Output (English): B, B