Task: Program Execution
Input (English): 5, 6, ['4913', 'G', '8949', 'f', 'a', 'W', 'K', 'J', '9147', '7347', '9913', '1567', 'T', '9297', 'T', 'f', '5489', 'X', '6585', '2643', 'U', '2989']
Output (English): Wa