import java.util.*;

public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int sum = 0;

    for(int i = 0;i < 2;i++) {
      if(a >= b) {
        sum += a;
        a--;
      } else {
        sum += b;
        b--;
      }
    }

    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 = sc.nextInt();
    int b = sc.nextInt();
    int sum = 0;

    for(int i = 0;i < 2;i++) {
      if(a >= b) {
        sum += a;
        a--;
      } else {
        sum += b;
        b--;
      }
    }

    System.out.println(sum);

  }

} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int sum = 0;

    for(int i = 0;i < 2;i++) {
      if(a >= b) {
        sum += a;
        a--;
      } else {
        sum += b;
        b--;
      }
    }

    System.out.println(sum);

  } main {
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int sum = 0;

    for(int i = 0;i < 2;i++) {
      if(a >= b) {
        sum += a;
        a--;
      } else {
        sum += b;
        b--;
      }
    }

    System.out.println(sum);

  } 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 sum = 0; sum 0 for(int i = 0;i < 2;i++) {
      if(a >= b) {
        sum += a;
        a--;
      } else {
        sum += b;
        b--;
      }
    } int i = 0; int i = 0; i 0 i < 2 i 2 i++ i++ i {
      if(a >= b) {
        sum += a;
        a--;
      } else {
        sum += b;
        b--;
      }
    } {
      if(a >= b) {
        sum += a;
        a--;
      } else {
        sum += b;
        b--;
      }
    } if(a >= b) {
        sum += a;
        a--;
      } else {
        sum += b;
        b--;
      } a >= b a b {
        sum += a;
        a--;
      } sum += a sum a a-- a {
        sum += b;
        b--;
      } sum += b sum b b-- b 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 = sc.nextInt();
    int b = sc.nextInt();
    int sum = 0;

    for(int i = 0;i < 2;i++) {
      if(a >= b) {
        sum += a;
        a--;
      } else {
        sum += b;
        b--;
      }
    }

    System.out.println(sum);

  }

} public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int sum = 0;

    for(int i = 0;i < 2;i++) {
      if(a >= b) {
        sum += a;
        a--;
      } else {
        sum += b;
        b--;
      }
    }

    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 = sc.nextInt();
    int b = sc.nextInt();
    int sum = 0;

    for(int i = 0;i < 2;i++) {
      if(a >= b) {
        sum += a;
        a--;
      } else {
        sum += b;
        b--;
      }
    }

    System.out.println(sum);

  }

}
