Task: Program Execution
Input (English): 1, 15, ['M', '9849', 'U', '871', 'I', 'p', 'y', '6537', '9089', '3489', 'x', 'p', '3461', '7327', '2237', '9803', 'D', '5479', '71', 'g', '2943']
Output (English): M9849U871Ipy653790893489xp346173272237