Task: Program Execution
Input (English): 3, 3, ['4463', 'a', '7791', 'I', 'N', 'e', 'U', 'V', '9411', 'k', 'a', '6725', '9275', '5957', 'M', '8235', '8637', '607', 'x', '5049', 'N', '7077', '6009', 's', 'Q']
Output (English): 1977