import java.util.*;

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

public class Main{
	public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
      int A,B;
      A = sc.nextInt();
      B = sc.nextInt();
      int result = 0;
      if (A >= B){
      	result = result + A;
        A = A - 1;
      }
      else{
      	result = result + B;
        B = B - 1;
      }
            if (A >= B){
      	result = result + A;
        A = A - 1;
      }
      else{
      	result = result + B;
        B = B - 1;
      }
      System.out.println(result);
    }
}