Task: Program Execution
Input (English): 2, 20, ['f', 'K', '2641', '9135', '1123', 'C', '5101', '6759', 'n', 'T', 'I', 'k', '8073', 'R', 'Z', '2941', '9905', '743', 'a', '9481', 'p', 'y', '7949', '1191', '9561', '7659']
Output (English): 1849a34750991492ZR3708kITn95761015C321153191462K