Task: Program Execution
Input (English): 3, 14, ['X', 'J', 'X', 'U', '6991', 'j', 'i', '5775', '317', '9363', 'z', 'r', 'h', '1707', 'T', 'a', '9591']
Output (English): 1707hrz93633175775ij6991UX