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 sum = Math.max(a,b);
      if(sum == a){
      	sum = sum + Math.max(a-1,b);
      }
      else{
      	sum = sum + Math.max(a,b-1);
      }
      System.out.println(sum);
    }
} 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 sum = Math.max(a,b);
      if(sum == a){
      	sum = sum + Math.max(a-1,b);
      }
      else{
      	sum = sum + Math.max(a,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 = Math.max(a,b);
      if(sum == a){
      	sum = sum + Math.max(a-1,b);
      }
      else{
      	sum = sum + Math.max(a,b-1);
      }
      System.out.println(sum);
    } main {
      Scanner sc = new Scanner(System.in);
      int a = sc.nextInt();
      int b = sc.nextInt();
      int sum = Math.max(a,b);
      if(sum == a){
      	sum = sum + Math.max(a-1,b);
      }
      else{
      	sum = sum + Math.max(a,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 = Math.max(a,b); sum Math.max(a,b) Math.max Math a b if(sum == a){
      	sum = sum + Math.max(a-1,b);
      }
      else{
      	sum = sum + Math.max(a,b-1);
      } sum == a sum a {
      	sum = sum + Math.max(a-1,b);
      } sum = sum + Math.max(a-1,b) sum sum + Math.max(a-1,b) sum Math.max(a-1,b) Math.max Math a-1 a 1 b {
      	sum = sum + Math.max(a,b-1);
      } sum = sum + Math.max(a,b-1) sum sum + Math.max(a,b-1) sum Math.max(a,b-1) Math.max Math a b-1 b 1 System.out.println(sum) System.out.println System.out System System.out sum 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 sum = Math.max(a,b);
      if(sum == a){
      	sum = sum + Math.max(a-1,b);
      }
      else{
      	sum = sum + Math.max(a,b-1);
      }
      System.out.println(sum);
    }
} public class Main{
	public static void main(String[] args){
      Scanner sc = new Scanner(System.in);
      int a = sc.nextInt();
      int b = sc.nextInt();
      int sum = Math.max(a,b);
      if(sum == a){
      	sum = sum + Math.max(a-1,b);
      }
      else{
      	sum = sum + Math.max(a,b-1);
      }
      System.out.println(sum);
    }
} 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 sum = Math.max(a,b);
      if(sum == a){
      	sum = sum + Math.max(a-1,b);
      }
      else{
      	sum = sum + Math.max(a,b-1);
      }
      System.out.println(sum);
    }
}