Task: Program Execution
Input (English): 15, 17, ['g', 'o', 'B', '3305', '6739', 'l', '4539', '7501', 'B', 'b', 'i', 'r', '4481', 'c', 'H', 'S', '3753', 'E']
Output (English): H, S, 3753