import java.util.*;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int A = sc.nextInt();
        int B = sc.nextInt();
        int ans = 0;

        if(A>=B){
            ans += A;
            A -= 1;
        }
        else if(A<B){
            ans += B;
            B -= 1;
        }

        if(A>=B){
            ans += A;
            A -= 1;
        }
        else if(A<B){
            ans += B;
            B -= 1;
        }
        System.out.println(ans);        
    }
} import java.util.*; util.* java public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int A = sc.nextInt();
        int B = sc.nextInt();
        int ans = 0;

        if(A>=B){
            ans += A;
            A -= 1;
        }
        else if(A<B){
            ans += B;
            B -= 1;
        }

        if(A>=B){
            ans += A;
            A -= 1;
        }
        else if(A<B){
            ans += B;
            B -= 1;
        }
        System.out.println(ans);        
    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int A = sc.nextInt();
        int B = sc.nextInt();
        int ans = 0;

        if(A>=B){
            ans += A;
            A -= 1;
        }
        else if(A<B){
            ans += B;
            B -= 1;
        }

        if(A>=B){
            ans += A;
            A -= 1;
        }
        else if(A<B){
            ans += B;
            B -= 1;
        }
        System.out.println(ans);        
    } main {
        Scanner sc = new Scanner(System.in);

        int A = sc.nextInt();
        int B = sc.nextInt();
        int ans = 0;

        if(A>=B){
            ans += A;
            A -= 1;
        }
        else if(A<B){
            ans += B;
            B -= 1;
        }

        if(A>=B){
            ans += A;
            A -= 1;
        }
        else if(A<B){
            ans += B;
            B -= 1;
        }
        System.out.println(ans);        
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int A = sc.nextInt(); A sc.nextInt() sc.nextInt sc int B = sc.nextInt(); B sc.nextInt() sc.nextInt sc int ans = 0; ans 0 if(A>=B){
            ans += A;
            A -= 1;
        }
        else if(A<B){
            ans += B;
            B -= 1;
        } A>=B A B {
            ans += A;
            A -= 1;
        } ans += A ans A A -= 1 A 1 if(A<B){
            ans += B;
            B -= 1;
        } A<B A B {
            ans += B;
            B -= 1;
        } ans += B ans B B -= 1 B 1 if(A>=B){
            ans += A;
            A -= 1;
        }
        else if(A<B){
            ans += B;
            B -= 1;
        } A>=B A B {
            ans += A;
            A -= 1;
        } ans += A ans A A -= 1 A 1 if(A<B){
            ans += B;
            B -= 1;
        } A<B A B {
            ans += B;
            B -= 1;
        } ans += B ans B B -= 1 B 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 A = sc.nextInt();
        int B = sc.nextInt();
        int ans = 0;

        if(A>=B){
            ans += A;
            A -= 1;
        }
        else if(A<B){
            ans += B;
            B -= 1;
        }

        if(A>=B){
            ans += A;
            A -= 1;
        }
        else if(A<B){
            ans += B;
            B -= 1;
        }
        System.out.println(ans);        
    }
} public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int A = sc.nextInt();
        int B = sc.nextInt();
        int ans = 0;

        if(A>=B){
            ans += A;
            A -= 1;
        }
        else if(A<B){
            ans += B;
            B -= 1;
        }

        if(A>=B){
            ans += A;
            A -= 1;
        }
        else if(A<B){
            ans += B;
            B -= 1;
        }
        System.out.println(ans);        
    }
} Main
import java.util.*;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int A = sc.nextInt();
        int B = sc.nextInt();
        int ans = 0;

        if(A>=B){
            ans += A;
            A -= 1;
        }
        else if(A<B){
            ans += B;
            B -= 1;
        }

        if(A>=B){
            ans += A;
            A -= 1;
        }
        else if(A<B){
            ans += B;
            B -= 1;
        }
        System.out.println(ans);        
    }
}