Task: Program Execution
Input (English): 17, 18, ['2077', 'K', '9167', '4851', 'u', 'w', 'N', '5225', 'd', 'l', 'A', '7067', 'l', '3271', '5583', 'S', 'S', 'l', '2975', 'E', '9121']
Output (English): lS