Task: Program Execution
Input (English): 15, 18, ['6639', 'z', '2133', '8705', '4887', '9125', '5515', '2001', 'A', '9131', 'n', 'f', 'd', 'I', '7829', '641', 'b', 'v', 'o', 'i', '3335', 'H', 'Y', 'E', 'b']
Output (English): 8470