2043. 서랍의 비밀번호

package oSWExpertAcademy;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class D1_2043 {
    public static void main(String[]args) {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        try {
            String[] Numbers = br.readLine().split(" ");
            int A = Integer.parseInt(Numbers[0]);
            int B = Integer.parseInt(Numbers[1]);
            System.out.println(Math.abs(A)-Math.abs(B)+1);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}