import java.util.Arrays;
import java.util.Scanner;

public class Main {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        Integer[] button = {a, b, a - 1, b - 1};

        Arrays.sort(button);
        int result = button[3] + button[2];

        System.out.println(result);
    }
} import java.util.Arrays; Arrays java.util import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        Integer[] button = {a, b, a - 1, b - 1};

        Arrays.sort(button);
        int result = button[3] + button[2];

        System.out.println(result);
    }
} Main public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        Integer[] button = {a, b, a - 1, b - 1};

        Arrays.sort(button);
        int result = button[3] + button[2];

        System.out.println(result);
    } main {

        Scanner sc = new Scanner(System.in);
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        Integer[] button = {a, b, a - 1, b - 1};

        Arrays.sort(button);
        int result = button[3] + button[2];

        System.out.println(result);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = Integer.parseInt(sc.next()); a Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int b = Integer.parseInt(sc.next()); b Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc Integer[] button = {a, b, a - 1, b - 1}; button {a, b, a - 1, b - 1} a b a - 1 a 1 b - 1 b 1 Arrays.sort(button) Arrays.sort Arrays button int result = button[3] + button[2]; result button[3] + button[2] button[3] button 3 button[2] button 2 System.out.println(result) System.out.println System.out System System.out result String args[] args public class Main {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        Integer[] button = {a, b, a - 1, b - 1};

        Arrays.sort(button);
        int result = button[3] + button[2];

        System.out.println(result);
    }
} public class Main {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        Integer[] button = {a, b, a - 1, b - 1};

        Arrays.sort(button);
        int result = button[3] + button[2];

        System.out.println(result);
    }
} Main
import java.util.Arrays;
import java.util.Scanner;

public class Main {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        Integer[] button = {a, b, a - 1, b - 1};

        Arrays.sort(button);
        int result = button[3] + button[2];

        System.out.println(result);
    }
}