Task: Program Execution
Input (English): 5, 5, ['Z', '4429', '5757', 'M', 'u', 'X', 'M', '1593', '2037', 'n', 'l', '493', '907', '7181', '9359', 'N', 'j', 'M', '6253', 'u', 't', 's', '3527', '7883', '493', '6533', '9411']
Output (English): u