Task: Program Execution
Input (English): 20, 21, ['K', '3707', 't', '9315', '1657', 'u', 'd', 'V', 'c', '7739', '4769', 'B', 'S', 'a', '9171', '2693', 'u', 'S', 'N', '6807', 'm']
Output (English): m7086