Task: Program Execution
Input (English): 2, 3, ['Z', 'R', 'd', '6209', '1749', '7609', 'Q', '8169', 'd', '1413', 'x', '8555', '4193', 't', 'J', 'l', '8885', '3115', 'U', 'b', '2209']
Output (English): dR