import java.util.*;
 
class Main {
 
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int sum = 0;
        if(a > b){
            sum += a;
            a -= 1;
        }else if(a<=b){
            sum += b;
            b -= 1;
        }
              if(a > b){
            sum += a;
            a -= 1;
        }else if(a<=b){
            sum += b;
            b -= 1;
        }
System.out.println(sum);
    }
 
} import java.util.*; util.* java class Main {
 
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int sum = 0;
        if(a > b){
            sum += a;
            a -= 1;
        }else if(a<=b){
            sum += b;
            b -= 1;
        }
              if(a > b){
            sum += a;
            a -= 1;
        }else if(a<=b){
            sum += b;
            b -= 1;
        }
System.out.println(sum);
    }
 
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int sum = 0;
        if(a > b){
            sum += a;
            a -= 1;
        }else if(a<=b){
            sum += b;
            b -= 1;
        }
              if(a > b){
            sum += a;
            a -= 1;
        }else if(a<=b){
            sum += b;
            b -= 1;
        }
System.out.println(sum);
    } main {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int sum = 0;
        if(a > b){
            sum += a;
            a -= 1;
        }else if(a<=b){
            sum += b;
            b -= 1;
        }
              if(a > b){
            sum += a;
            a -= 1;
        }else if(a<=b){
            sum += b;
            b -= 1;
        }
System.out.println(sum);
    } 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 sum = 0; sum 0 if(a > b){
            sum += a;
            a -= 1;
        }else if(a<=b){
            sum += b;
            b -= 1;
        } a > b a b {
            sum += a;
            a -= 1;
        } sum += a sum a a -= 1 a 1 if(a<=b){
            sum += b;
            b -= 1;
        } a<=b a b {
            sum += b;
            b -= 1;
        } sum += b sum b b -= 1 b 1 if(a > b){
            sum += a;
            a -= 1;
        }else if(a<=b){
            sum += b;
            b -= 1;
        } a > b a b {
            sum += a;
            a -= 1;
        } sum += a sum a a -= 1 a 1 if(a<=b){
            sum += b;
            b -= 1;
        } a<=b a b {
            sum += b;
            b -= 1;
        } sum += b sum b b -= 1 b 1 System.out.println(sum) System.out.println System.out System System.out sum String[] args args
import java.util.*;
 
class Main {
 
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int sum = 0;
        if(a > b){
            sum += a;
            a -= 1;
        }else if(a<=b){
            sum += b;
            b -= 1;
        }
              if(a > b){
            sum += a;
            a -= 1;
        }else if(a<=b){
            sum += b;
            b -= 1;
        }
System.out.println(sum);
    }
 
}