Task: Program Execution
Input (English): 2, ['3177', 'f', 'f', '6925', 'T', '5527', '6897', '6885', '7159', '1865', 'O', '5159', 'N', 'a', 'm', '1905', '3811', '5581', '5091', 'G']
Output (English): 3177, f