Task: Program Execution
Input (English): 2, 17, ['6659', 'U', 'L', '669', '8949', '7717', '5853', '5849', 'A', 'f', 'H', '6459', 'j', '7877', 'j', '5717', 'w']
Output (English): UL6698949771758535849AfH6459j7877j5717w