import java.util.Scanner;

public class Main {
  public static void main(String args[]) {
    final Scanner scanner = new Scanner(System.in);
    int a = scanner.nextInt();
    int b = scanner.nextInt();
    int result = 0;
    for (int i = 0; i < 2; i++) {
      if (a >= b) {
        result += a;
        a--;
      } else {
        result += b;
        b--;
      }
    }
    System.out.println(result);
  }
} import java.util.Scanner; Scanner java.util public class Main {
  public static void main(String args[]) {
    final Scanner scanner = new Scanner(System.in);
    int a = scanner.nextInt();
    int b = scanner.nextInt();
    int result = 0;
    for (int i = 0; i < 2; i++) {
      if (a >= b) {
        result += a;
        a--;
      } else {
        result += b;
        b--;
      }
    }
    System.out.println(result);
  }
} Main public static void main(String args[]) {
    final Scanner scanner = new Scanner(System.in);
    int a = scanner.nextInt();
    int b = scanner.nextInt();
    int result = 0;
    for (int i = 0; i < 2; i++) {
      if (a >= b) {
        result += a;
        a--;
      } else {
        result += b;
        b--;
      }
    }
    System.out.println(result);
  } main {
    final Scanner scanner = new Scanner(System.in);
    int a = scanner.nextInt();
    int b = scanner.nextInt();
    int result = 0;
    for (int i = 0; i < 2; i++) {
      if (a >= b) {
        result += a;
        a--;
      } else {
        result += b;
        b--;
      }
    }
    System.out.println(result);
  } final Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) int a = scanner.nextInt(); a scanner.nextInt() scanner.nextInt scanner int b = scanner.nextInt(); b scanner.nextInt() scanner.nextInt scanner int result = 0; result 0 for (int i = 0; i < 2; i++) {
      if (a >= b) {
        result += a;
        a--;
      } else {
        result += b;
        b--;
      }
    } int i = 0; int i = 0; i 0 i < 2 i 2 i++ i++ i {
      if (a >= b) {
        result += a;
        a--;
      } else {
        result += b;
        b--;
      }
    } {
      if (a >= b) {
        result += a;
        a--;
      } else {
        result += b;
        b--;
      }
    } if (a >= b) {
        result += a;
        a--;
      } else {
        result += b;
        b--;
      } a >= b a b {
        result += a;
        a--;
      } result += a result a a-- a {
        result += b;
        b--;
      } result += b result b b-- 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[]) {
    final Scanner scanner = new Scanner(System.in);
    int a = scanner.nextInt();
    int b = scanner.nextInt();
    int result = 0;
    for (int i = 0; i < 2; i++) {
      if (a >= b) {
        result += a;
        a--;
      } else {
        result += b;
        b--;
      }
    }
    System.out.println(result);
  }
} public class Main {
  public static void main(String args[]) {
    final Scanner scanner = new Scanner(System.in);
    int a = scanner.nextInt();
    int b = scanner.nextInt();
    int result = 0;
    for (int i = 0; i < 2; i++) {
      if (a >= b) {
        result += a;
        a--;
      } else {
        result += b;
        b--;
      }
    }
    System.out.println(result);
  }
} Main
import java.util.Scanner;

public class Main {
  public static void main(String args[]) {
    final Scanner scanner = new Scanner(System.in);
    int a = scanner.nextInt();
    int b = scanner.nextInt();
    int result = 0;
    for (int i = 0; i < 2; i++) {
      if (a >= b) {
        result += a;
        a--;
      } else {
        result += b;
        b--;
      }
    }
    System.out.println(result);
  }
}