import java.util.Scanner; public class Main{ public static void main(String[] args){ Scanner in = new Scanner(System.in); String aHex = in.next(); String bOct = in.next(); int a = Integer.parseInt(aHex.substring(2,aHex.length()), 16);//去掉16进制的前两位0x标志位,之后转化为十进制 ...