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 if (b > a) {
        sum += b;
        b--;
      } else {
        sum += a;
        a--;
      }
    }

    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 if (b > a) {
        sum += b;
        b--;
      } else {
        sum += a;
        a--;
      }
    }

    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 if (b > a) {
        sum += b;
        b--;
      } else {
        sum += a;
        a--;
      }
    }

    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 if (b > a) {
        sum += b;
        b--;
      } else {
        sum += a;
        a--;
      }
    }

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

    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 if (b > a) {
        sum += b;
        b--;
      } else {
        sum += a;
        a--;
      }
    }

    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 if (b > a) {
        sum += b;
        b--;
      } else {
        sum += a;
        a--;
      }
    }

    System.out.println(sum);
  }
}