Task: Program Execution
Input (English): 3, 15, ['W', '1391', '3031', '497', '8617', '5211', 'i', 'L', '8515', '41', 'k', '1699', '7615', '6393', 's', '8409', '9921', 'W', 'y', 'a', 'B', 'H']
Output (English): s393651679961k145158Li112571687941303