Task: Program Execution
Input (English): 3, 4, ['4455', '4577', 'd', '5983', '5853', '2779', 'U', '215', 'D', 'U', '4137', 's', 'P', 'j', 'n', 'T', 'F', '3967', 'c', '2015', 'M', 'P', '1717']
Output (English): d, 5983