Task: Program Execution
Input (English): 14, 15, ['5401', '5559', 't', 'j', '6643', 'I', 'V', 'W', 'h', 'V', 'v', 'g', 'D', 'M', 'Z', '4627', '9321', '4727', 'v', '6667', '6993', '1357', 'a', '361', '545']
Output (English): ZM