import java.util.Scanner;

class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        sc.close();
        String[] S = s.split(" ");
        int a = Integer.parseInt(S[0]);
        int b = Integer.parseInt(S[1]);
        int count = 0;

        for(int i = 0; i < 2; i++) {
            if(a > b) {
                count += a;
                a--;             
            }else{
                count += b;
                b--;
            }
        }
        System.out.println(count);
    }
} import java.util.Scanner; Scanner java.util class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        sc.close();
        String[] S = s.split(" ");
        int a = Integer.parseInt(S[0]);
        int b = Integer.parseInt(S[1]);
        int count = 0;

        for(int i = 0; i < 2; i++) {
            if(a > b) {
                count += a;
                a--;             
            }else{
                count += b;
                b--;
            }
        }
        System.out.println(count);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        sc.close();
        String[] S = s.split(" ");
        int a = Integer.parseInt(S[0]);
        int b = Integer.parseInt(S[1]);
        int count = 0;

        for(int i = 0; i < 2; i++) {
            if(a > b) {
                count += a;
                a--;             
            }else{
                count += b;
                b--;
            }
        }
        System.out.println(count);
    } main {
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        sc.close();
        String[] S = s.split(" ");
        int a = Integer.parseInt(S[0]);
        int b = Integer.parseInt(S[1]);
        int count = 0;

        for(int i = 0; i < 2; i++) {
            if(a > b) {
                count += a;
                a--;             
            }else{
                count += b;
                b--;
            }
        }
        System.out.println(count);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s = sc.nextLine(); s sc.nextLine() sc.nextLine sc sc.close() sc.close sc String[] S = s.split(" "); S s.split(" ") s.split s " " int a = Integer.parseInt(S[0]); a Integer.parseInt(S[0]) Integer.parseInt Integer S[0] S 0 int b = Integer.parseInt(S[1]); b Integer.parseInt(S[1]) Integer.parseInt Integer S[1] S 1 int count = 0; count 0 for(int i = 0; i < 2; i++) {
            if(a > b) {
                count += a;
                a--;             
            }else{
                count += b;
                b--;
            }
        } int i = 0; int i = 0; i 0 i < 2 i 2 i++ i++ i {
            if(a > b) {
                count += a;
                a--;             
            }else{
                count += b;
                b--;
            }
        } {
            if(a > b) {
                count += a;
                a--;             
            }else{
                count += b;
                b--;
            }
        } if(a > b) {
                count += a;
                a--;             
            }else{
                count += b;
                b--;
            } a > b a b {
                count += a;
                a--;             
            } count += a count a a-- a {
                count += b;
                b--;
            } count += b count b b-- b System.out.println(count) System.out.println System.out System System.out count String[] args args
import java.util.Scanner;

class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        sc.close();
        String[] S = s.split(" ");
        int a = Integer.parseInt(S[0]);
        int b = Integer.parseInt(S[1]);
        int count = 0;

        for(int i = 0; i < 2; i++) {
            if(a > b) {
                count += a;
                a--;             
            }else{
                count += b;
                b--;
            }
        }
        System.out.println(count);
    }
}