Task: Program Execution
Input (English): 6, 21, ['4159', '4789', '1567', 'G', 'Z', 'c', '4341', '5697', 'R', 'n', '8375', '1481', '3909', 'p', 'p', '4055', 'G', 'S', 'D', 'Z', '3229', '649', 'a', 'q', '1549']
Output (English): 31087