import java.util.*;

public class Main {
  public static void main(String[] args) {
          Scanner sc = new Scanner(System.in);
          int num1 = sc.nextInt();
          int num2 = sc.nextInt();
          int sum = 0;
          for(int i = 0; i < 2; i++){
            if(num1 < num2){
              sum += num2;
              num2--;
            } else {
              sum += num1;
              num1--;
            }
          }
          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 num1 = sc.nextInt();
          int num2 = sc.nextInt();
          int sum = 0;
          for(int i = 0; i < 2; i++){
            if(num1 < num2){
              sum += num2;
              num2--;
            } else {
              sum += num1;
              num1--;
            }
          }
          System.out.println(sum);
      }
    } Main public static void main(String[] args) {
          Scanner sc = new Scanner(System.in);
          int num1 = sc.nextInt();
          int num2 = sc.nextInt();
          int sum = 0;
          for(int i = 0; i < 2; i++){
            if(num1 < num2){
              sum += num2;
              num2--;
            } else {
              sum += num1;
              num1--;
            }
          }
          System.out.println(sum);
      } main {
          Scanner sc = new Scanner(System.in);
          int num1 = sc.nextInt();
          int num2 = sc.nextInt();
          int sum = 0;
          for(int i = 0; i < 2; i++){
            if(num1 < num2){
              sum += num2;
              num2--;
            } else {
              sum += num1;
              num1--;
            }
          }
          System.out.println(sum);
      } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int num1 = sc.nextInt(); num1 sc.nextInt() sc.nextInt sc int num2 = sc.nextInt(); num2 sc.nextInt() sc.nextInt sc int sum = 0; sum 0 for(int i = 0; i < 2; i++){
            if(num1 < num2){
              sum += num2;
              num2--;
            } else {
              sum += num1;
              num1--;
            }
          } int i = 0; int i = 0; i 0 i < 2 i 2 i++ i++ i {
            if(num1 < num2){
              sum += num2;
              num2--;
            } else {
              sum += num1;
              num1--;
            }
          } {
            if(num1 < num2){
              sum += num2;
              num2--;
            } else {
              sum += num1;
              num1--;
            }
          } if(num1 < num2){
              sum += num2;
              num2--;
            } else {
              sum += num1;
              num1--;
            } num1 < num2 num1 num2 {
              sum += num2;
              num2--;
            } sum += num2 sum num2 num2-- num2 {
              sum += num1;
              num1--;
            } sum += num1 sum num1 num1-- num1 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 num1 = sc.nextInt();
          int num2 = sc.nextInt();
          int sum = 0;
          for(int i = 0; i < 2; i++){
            if(num1 < num2){
              sum += num2;
              num2--;
            } else {
              sum += num1;
              num1--;
            }
          }
          System.out.println(sum);
      }
    } public class Main {
  public static void main(String[] args) {
          Scanner sc = new Scanner(System.in);
          int num1 = sc.nextInt();
          int num2 = sc.nextInt();
          int sum = 0;
          for(int i = 0; i < 2; i++){
            if(num1 < num2){
              sum += num2;
              num2--;
            } else {
              sum += num1;
              num1--;
            }
          }
          System.out.println(sum);
      }
    } Main
import java.util.*;

public class Main {
  public static void main(String[] args) {
          Scanner sc = new Scanner(System.in);
          int num1 = sc.nextInt();
          int num2 = sc.nextInt();
          int sum = 0;
          for(int i = 0; i < 2; i++){
            if(num1 < num2){
              sum += num2;
              num2--;
            } else {
              sum += num1;
              num1--;
            }
          }
          System.out.println(sum);
      }
    }