Task: Program Execution
Input (English): 1, 8, ['f', 'I', '4061', '6785', '3677', '2905', 'u', 'u', 'K', 'B', 'w', 'J', 'v', 'u', 'C', '8273', 'S', '1213', 'c']
Output (English): f, K, S