Task: Program Execution
Input (English): 3, 4, ['6681', 'S', 'F', 'f', '5539', 'i', 'n', '8103', '1107', '7047', 's', 'P', '4377', '3733', 'm', '4751', '6007', '7951', 'e']
Output (English): F, n, s, m, e