Task: Program Execution
Input (English): 9, 10, ['7983', '795', 'R', '8945', 'J', 'o', '6779', 'M', 'z', '3545', '4019', 'L', 'a', 'l', 'D', '7763', 'b', '5129', 'J']
Output (English): z3545