Task: Program Execution
Input (English): 6, 18, ['x', 'm', 'z', '4399', 'p', 'R', 'U', 'f', 'd', 'Z', 'G', 'a', 'p', '6237', '451', '1091', 'C', 'd']
Output (English): RUfdZGap62374511091Cd