import java.util.Scanner;
class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    if(Math.abs(a-b) == 0){
      System.out.println(a + b);
    }else{
      System.out.println(Math.max(a,b) * 2 - 1);
    }
  }
} import java.util.Scanner; Scanner java.util class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    if(Math.abs(a-b) == 0){
      System.out.println(a + b);
    }else{
      System.out.println(Math.max(a,b) * 2 - 1);
    }
  }
} Main public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    if(Math.abs(a-b) == 0){
      System.out.println(a + b);
    }else{
      System.out.println(Math.max(a,b) * 2 - 1);
    }
  } main {
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    if(Math.abs(a-b) == 0){
      System.out.println(a + b);
    }else{
      System.out.println(Math.max(a,b) * 2 - 1);
    }
  } 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 if(Math.abs(a-b) == 0){
      System.out.println(a + b);
    }else{
      System.out.println(Math.max(a,b) * 2 - 1);
    } Math.abs(a-b) == 0 Math.abs(a-b) Math.abs Math a-b a b 0 {
      System.out.println(a + b);
    } System.out.println(a + b) System.out.println System.out System System.out a + b a b {
      System.out.println(Math.max(a,b) * 2 - 1);
    } System.out.println(Math.max(a,b) * 2 - 1) System.out.println System.out System System.out Math.max(a,b) * 2 - 1 Math.max(a,b) * 2 Math.max(a,b) Math.max Math a b 2 1 String[] args args
import java.util.Scanner;
class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    if(Math.abs(a-b) == 0){
      System.out.println(a + b);
    }else{
      System.out.println(Math.max(a,b) * 2 - 1);
    }
  }
}