Task: Program Execution
Input (English): 13, 13, ['K', 'I', '5469', '7543', 'u', 'n', '6063', '3795', '8431', 'r', 'k', 'A', 'x', 'D', 'u', '1083', '7355', 'T', 'v', '4245', 'u', 'G']
Output (English): x