import java.util.*; public class Main { public static void main(String[] args){ Scanner s = new Scanner(System.in); while (s.hasNext()){ String in = s.next();//去掉空格 //String in = "0xC460"; in = in.substring(2); int num = 0; for(int i = 0;i<in.length();i++){ if(in.charAt(i)<='Z'&&in.charAt(i)>='A'){ num = num*16 + in.charAt(i)-'A'+10;//从高位往下算方便很多 }else { num = num * 16 +in.charAt(i)-'0'; } } System.out.println(num); } } }