Task: Program Execution
Input (English): 4, 10, ['s', '899', 'J', '637', 'C', '3513', '5199', 't', 't', 'o', '2155', 'Q', 'p', 'k', 'a', '2985', '991', 'x', 'i']
Output (English): 637C35135199tto