import java.util.*;
public class Main{
	public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
      	int[] a = new int[2];
      	a[0] = sc.nextInt();
      	a[1] = sc.nextInt();
      	int sum = 0;
      
      	Arrays.sort(a);
      	sum += a[1];
      	a[1]--;
      	Arrays.sort(a);
      	sum += a[1];
      	a[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 = new int[2];
      	a[0] = sc.nextInt();
      	a[1] = sc.nextInt();
      	int sum = 0;
      
      	Arrays.sort(a);
      	sum += a[1];
      	a[1]--;
      	Arrays.sort(a);
      	sum += a[1];
      	a[1]--;
      	System.out.println(sum);
    }
} Main public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
      	int[] a = new int[2];
      	a[0] = sc.nextInt();
      	a[1] = sc.nextInt();
      	int sum = 0;
      
      	Arrays.sort(a);
      	sum += a[1];
      	a[1]--;
      	Arrays.sort(a);
      	sum += a[1];
      	a[1]--;
      	System.out.println(sum);
    } main {
    	Scanner sc = new Scanner(System.in);
      	int[] a = new int[2];
      	a[0] = sc.nextInt();
      	a[1] = sc.nextInt();
      	int sum = 0;
      
      	Arrays.sort(a);
      	sum += a[1];
      	a[1]--;
      	Arrays.sort(a);
      	sum += a[1];
      	a[1]--;
      	System.out.println(sum);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int[] a = new int[2]; a new int[2] 2 a[0] = sc.nextInt() a[0] a 0 sc.nextInt() sc.nextInt sc a[1] = sc.nextInt() a[1] a 1 sc.nextInt() sc.nextInt sc int sum = 0; sum 0 Arrays.sort(a) Arrays.sort Arrays a sum += a[1] sum a[1] a 1 a[1]-- a[1] a 1 Arrays.sort(a) Arrays.sort Arrays a sum += a[1] sum a[1] a 1 a[1]-- a[1] a 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 = new int[2];
      	a[0] = sc.nextInt();
      	a[1] = sc.nextInt();
      	int sum = 0;
      
      	Arrays.sort(a);
      	sum += a[1];
      	a[1]--;
      	Arrays.sort(a);
      	sum += a[1];
      	a[1]--;
      	System.out.println(sum);
    }
} public class Main{
	public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
      	int[] a = new int[2];
      	a[0] = sc.nextInt();
      	a[1] = sc.nextInt();
      	int sum = 0;
      
      	Arrays.sort(a);
      	sum += a[1];
      	a[1]--;
      	Arrays.sort(a);
      	sum += a[1];
      	a[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 = new int[2];
      	a[0] = sc.nextInt();
      	a[1] = sc.nextInt();
      	int sum = 0;
      
      	Arrays.sort(a);
      	sum += a[1];
      	a[1]--;
      	Arrays.sort(a);
      	sum += a[1];
      	a[1]--;
      	System.out.println(sum);
    }
}