import java.util.Scanner;

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

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

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

    if (A > B) {
      result += A;
    } else {
      result += B;
    }
    System.out.println(result);
  } main {
    Scanner scan = new Scanner(System.in);
    int A = scan.nextInt();
    int B = scan.nextInt();
    int result = 0;
    
    if (A > B) {
      result += A--;
    } else {
      result += B--;
    }

    if (A > B) {
      result += A;
    } else {
      result += B;
    }
    System.out.println(result);
  } Scanner scan = new Scanner(System.in); scan new Scanner(System.in) int A = scan.nextInt(); A scan.nextInt() scan.nextInt scan int B = scan.nextInt(); B scan.nextInt() scan.nextInt scan int result = 0; result 0 if (A > B) {
      result += A--;
    } else {
      result += B--;
    } A > B A B {
      result += A--;
    } result += A-- result A-- A {
      result += B--;
    } result += B-- result B-- B if (A > B) {
      result += A;
    } else {
      result += B;
    } A > B A B {
      result += A;
    } result += A result A {
      result += B;
    } result += B result B 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 scan = new Scanner(System.in);
    int A = scan.nextInt();
    int B = scan.nextInt();
    int result = 0;
    
    if (A > B) {
      result += A--;
    } else {
      result += B--;
    }

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

    if (A > B) {
      result += A;
    } else {
      result += B;
    }
    System.out.println(result);
  }
} Main
import java.util.Scanner;

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

    if (A > B) {
      result += A;
    } else {
      result += B;
    }
    System.out.println(result);
  }
}
