import java.util.*;

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

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