[백준] 2420번 사파리 월드 (bronze 5

import java.io.*;
import java.util.*;


public class Main {
   public static void main(String[] args) throws IOException {
       BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
       BufferedWriter bw=new BufferedWriter(new OutputStreamWriter(System.out));
       StringTokenizer st=new StringTokenizer(br.readLine());
       long a=Long.valueOf(st.nextToken());
       long b=Long.valueOf(st.nextToken());
       bw.write(Math.abs(a-b)+"");
       bw.flush();
   }

}