Task: Program Execution
Input (English): 1, 19, ['1687', 'r', '2765', 'B', 'i', '8933', '9591', 'x', 'M', 'v', 'K', '307', '723', 'x', '2557', 'S', '4629', '5987', '8997', 's', '9005', '8281']
Output (English): 899759874629S2557x723307KvMx95918933iB2765r1687