Task: Program Execution
Input (English): 9, 18, ['h', '8437', 'G', '6923', '8365', '5709', '9391', '6121', 'x', '7505', 'n', 'P', '2389', '79', '3053', '1753', 'E', '3609', '5285', '9775', 'X', 'f']
Output (English): 3609E17533053792389Pn7505x