Task: Program Execution
Input (English): 2, 3, ['1975', 'b', '87', 'C', '6955', 's', '5851', 'u', 'm', '2817', '9545', 'B', '3111', 'z', 'x', 'C', '1811', 'U', 'K', '9687']
Output (English): 87, b