Task: Program Execution
Input (English): 7, 9, ['b', '769', 'z', 't', '7375', 'c', 'D', 'k', '4081', 'N', '5539', 'F', '5503', '4167', '3237', '6391', 'Z', '8245', '5255', '6369', 'R', 'I', 'C', 'U']
Output (English): 1804kD