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();

    if (A < B) {
      if (A < (B - 1)) {
        System.out.println(B + (B - 1));
      } else {
        System.out.println(A + B);
      }
    } else {
      if (B < (A - 1)) {
        System.out.println(A + (A - 1));
      } else {
        System.out.println(A + B);
      }
    }

  }
} 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();

    if (A < B) {
      if (A < (B - 1)) {
        System.out.println(B + (B - 1));
      } else {
        System.out.println(A + B);
      }
    } else {
      if (B < (A - 1)) {
        System.out.println(A + (A - 1));
      } else {
        System.out.println(A + B);
      }
    }

  }
} Main public static void main(String[] args){

    Scanner sc = new Scanner(System.in);
    int A = sc.nextInt();
    int B = sc.nextInt();

    if (A < B) {
      if (A < (B - 1)) {
        System.out.println(B + (B - 1));
      } else {
        System.out.println(A + B);
      }
    } else {
      if (B < (A - 1)) {
        System.out.println(A + (A - 1));
      } else {
        System.out.println(A + B);
      }
    }

  } main {

    Scanner sc = new Scanner(System.in);
    int A = sc.nextInt();
    int B = sc.nextInt();

    if (A < B) {
      if (A < (B - 1)) {
        System.out.println(B + (B - 1));
      } else {
        System.out.println(A + B);
      }
    } else {
      if (B < (A - 1)) {
        System.out.println(A + (A - 1));
      } else {
        System.out.println(A + B);
      }
    }

  } 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 if (A < B) {
      if (A < (B - 1)) {
        System.out.println(B + (B - 1));
      } else {
        System.out.println(A + B);
      }
    } else {
      if (B < (A - 1)) {
        System.out.println(A + (A - 1));
      } else {
        System.out.println(A + B);
      }
    } A < B A B {
      if (A < (B - 1)) {
        System.out.println(B + (B - 1));
      } else {
        System.out.println(A + B);
      }
    } if (A < (B - 1)) {
        System.out.println(B + (B - 1));
      } else {
        System.out.println(A + B);
      } A < (B - 1) A (B - 1) B 1 {
        System.out.println(B + (B - 1));
      } System.out.println(B + (B - 1)) System.out.println System.out System System.out B + (B - 1) B (B - 1) B 1 {
        System.out.println(A + B);
      } System.out.println(A + B) System.out.println System.out System System.out A + B A B {
      if (B < (A - 1)) {
        System.out.println(A + (A - 1));
      } else {
        System.out.println(A + B);
      }
    } if (B < (A - 1)) {
        System.out.println(A + (A - 1));
      } else {
        System.out.println(A + B);
      } B < (A - 1) B (A - 1) A 1 {
        System.out.println(A + (A - 1));
      } System.out.println(A + (A - 1)) System.out.println System.out System System.out A + (A - 1) A (A - 1) A 1 {
        System.out.println(A + B);
      } System.out.println(A + B) System.out.println System.out System System.out A + B A B 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();

    if (A < B) {
      if (A < (B - 1)) {
        System.out.println(B + (B - 1));
      } else {
        System.out.println(A + B);
      }
    } else {
      if (B < (A - 1)) {
        System.out.println(A + (A - 1));
      } else {
        System.out.println(A + B);
      }
    }

  }
} public class Main {
  public static void main(String[] args){

    Scanner sc = new Scanner(System.in);
    int A = sc.nextInt();
    int B = sc.nextInt();

    if (A < B) {
      if (A < (B - 1)) {
        System.out.println(B + (B - 1));
      } else {
        System.out.println(A + B);
      }
    } else {
      if (B < (A - 1)) {
        System.out.println(A + (A - 1));
      } else {
        System.out.println(A + B);
      }
    }

  }
} 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();

    if (A < B) {
      if (A < (B - 1)) {
        System.out.println(B + (B - 1));
      } else {
        System.out.println(A + B);
      }
    } else {
      if (B < (A - 1)) {
        System.out.println(A + (A - 1));
      } else {
        System.out.println(A + B);
      }
    }

  }
}