Task: Program Execution
Input (English): 4, ['I', '1989', 'E', 'k', 'S', '1703', '8739', '2167', 's', 'E', 't', '9331', 'P', 'D', 'P', 'T', '8901', '4423', 't']
Output (English): I, S, s, P, 8901