Task: Program Execution
Input (English): 2, 7, ['R', 'M', 'z', '4213', 'a', '8427', 'a', '6559', '879', '7401', 'u', 's', 'S', '4669', '4801', 'C', 'Q', 'P', '3803', 'D', 'r']
Output (English): M, 879, C