Task: Program Execution
Input (English): 1, 5, ['31', '3615', '2539', '9653', '9961', 'F', '4897', 'F', 'b', '6925', 'X', 'm', '381', '25', 'F', 'M', 'I', '853', '2865', 'I', '6977']
Output (English): 31, F, X, M, 6977