import java.util.*;

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++){
      int button = 0;
      if(A > B){
        sum += A;
        A -= 1;
      }else{
        sum += B;
        B -= 1;
      }
    }
    System.out.println(sum);
  }
} import java.util.*; util.* java 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++){
      int button = 0;
      if(A > B){
        sum += A;
        A -= 1;
      }else{
        sum += B;
        B -= 1;
      }
    }
    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++){
      int button = 0;
      if(A > B){
        sum += A;
        A -= 1;
      }else{
        sum += B;
        B -= 1;
      }
    }
    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++){
      int button = 0;
      if(A > B){
        sum += A;
        A -= 1;
      }else{
        sum += B;
        B -= 1;
      }
    }
    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++){
      int button = 0;
      if(A > B){
        sum += A;
        A -= 1;
      }else{
        sum += B;
        B -= 1;
      }
    } int i=0; int i=0; i 0 i<2 i 2 i++ i++ i {
      int button = 0;
      if(A > B){
        sum += A;
        A -= 1;
      }else{
        sum += B;
        B -= 1;
      }
    } {
      int button = 0;
      if(A > B){
        sum += A;
        A -= 1;
      }else{
        sum += B;
        B -= 1;
      }
    } int button = 0; button 0 if(A > B){
        sum += A;
        A -= 1;
      }else{
        sum += B;
        B -= 1;
      } A > B A B {
        sum += A;
        A -= 1;
      } sum += A sum A A -= 1 A 1 {
        sum += B;
        B -= 1;
      } sum += B sum B B -= 1 B 1 System.out.println(sum) System.out.println System.out System System.out sum String[] args args
import java.util.*;

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++){
      int button = 0;
      if(A > B){
        sum += A;
        A -= 1;
      }else{
        sum += B;
        B -= 1;
      }
    }
    System.out.println(sum);
  }
}