Task: Program Execution
Input (English): 11, 11, ['4919', '9865', 'a', 'm', 'n', 'r', '5223', 'T', 'e', '5547', 'Z', '7563', 'u', '2657', '1373', '9415', '4831', '3115', '583', 'a', '8933', '4903']
Output (English): Z