Task: Program Execution
Input (English): 15, 18, ['1659', 'H', 'x', '5093', 'x', '9585', '73', '6457', '2801', 'G', '4901', '19', 'O', 'I', 'i', '2913', '2729', 'r', '9411', '413', 'f', '4307', 'J', '9489', '6111', 'E', '3747', '7577', '4397', 'K']
Output (English): 5642