import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        int y = sc.nextInt();
        sc.close();

        int ans;
        if (x == y) {
            ans = x + y;
        } else if (x > y) {
            ans = x + (x - 1);
        } else {
            ans = y + (y - 1);
        }
        System.out.println(ans);
    }

} import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        int y = sc.nextInt();
        sc.close();

        int ans;
        if (x == y) {
            ans = x + y;
        } else if (x > y) {
            ans = x + (x - 1);
        } else {
            ans = y + (y - 1);
        }
        System.out.println(ans);
    }

} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        int y = sc.nextInt();
        sc.close();

        int ans;
        if (x == y) {
            ans = x + y;
        } else if (x > y) {
            ans = x + (x - 1);
        } else {
            ans = y + (y - 1);
        }
        System.out.println(ans);
    } main {
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        int y = sc.nextInt();
        sc.close();

        int ans;
        if (x == y) {
            ans = x + y;
        } else if (x > y) {
            ans = x + (x - 1);
        } else {
            ans = y + (y - 1);
        }
        System.out.println(ans);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int x = sc.nextInt(); x sc.nextInt() sc.nextInt sc int y = sc.nextInt(); y sc.nextInt() sc.nextInt sc sc.close() sc.close sc int ans; ans if (x == y) {
            ans = x + y;
        } else if (x > y) {
            ans = x + (x - 1);
        } else {
            ans = y + (y - 1);
        } x == y x y {
            ans = x + y;
        } ans = x + y ans x + y x y if (x > y) {
            ans = x + (x - 1);
        } else {
            ans = y + (y - 1);
        } x > y x y {
            ans = x + (x - 1);
        } ans = x + (x - 1) ans x + (x - 1) x (x - 1) x 1 {
            ans = y + (y - 1);
        } ans = y + (y - 1) ans y + (y - 1) y (y - 1) y 1 System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        int y = sc.nextInt();
        sc.close();

        int ans;
        if (x == y) {
            ans = x + y;
        } else if (x > y) {
            ans = x + (x - 1);
        } else {
            ans = y + (y - 1);
        }
        System.out.println(ans);
    }

} public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        int y = sc.nextInt();
        sc.close();

        int ans;
        if (x == y) {
            ans = x + y;
        } else if (x > y) {
            ans = x + (x - 1);
        } else {
            ans = y + (y - 1);
        }
        System.out.println(ans);
    }

} Main
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        int y = sc.nextInt();
        sc.close();

        int ans;
        if (x == y) {
            ans = x + y;
        } else if (x > y) {
            ans = x + (x - 1);
        } else {
            ans = y + (y - 1);
        }
        System.out.println(ans);
    }

}
