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 answer = 0;
    
    if (a == b) {
        answer = a + b;
    } else if (a > b) {
        answer = a + a - 1;
    } else if (a < b) {
        answer = b + b - 1;
    }
    
    System.out.println(answer);
  }
} 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 answer = 0;
    
    if (a == b) {
        answer = a + b;
    } else if (a > b) {
        answer = a + a - 1;
    } else if (a < b) {
        answer = b + b - 1;
    }
    
    System.out.println(answer);
  }
} Main public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    
    int a = sc.nextInt();
    int b = sc.nextInt();
    
    int answer = 0;
    
    if (a == b) {
        answer = a + b;
    } else if (a > b) {
        answer = a + a - 1;
    } else if (a < b) {
        answer = b + b - 1;
    }
    
    System.out.println(answer);
  } main {
    Scanner sc = new Scanner(System.in);
    
    int a = sc.nextInt();
    int b = sc.nextInt();
    
    int answer = 0;
    
    if (a == b) {
        answer = a + b;
    } else if (a > b) {
        answer = a + a - 1;
    } else if (a < b) {
        answer = b + b - 1;
    }
    
    System.out.println(answer);
  } 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 answer = 0; answer 0 if (a == b) {
        answer = a + b;
    } else if (a > b) {
        answer = a + a - 1;
    } else if (a < b) {
        answer = b + b - 1;
    } a == b a b {
        answer = a + b;
    } answer = a + b answer a + b a b if (a > b) {
        answer = a + a - 1;
    } else if (a < b) {
        answer = b + b - 1;
    } a > b a b {
        answer = a + a - 1;
    } answer = a + a - 1 answer a + a - 1 a + a a a 1 if (a < b) {
        answer = b + b - 1;
    } a < b a b {
        answer = b + b - 1;
    } answer = b + b - 1 answer b + b - 1 b + b b b 1 System.out.println(answer) System.out.println System.out System System.out answer 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 answer = 0;
    
    if (a == b) {
        answer = a + b;
    } else if (a > b) {
        answer = a + a - 1;
    } else if (a < b) {
        answer = b + b - 1;
    }
    
    System.out.println(answer);
  }
} public class Main {
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    
    int a = sc.nextInt();
    int b = sc.nextInt();
    
    int answer = 0;
    
    if (a == b) {
        answer = a + b;
    } else if (a > b) {
        answer = a + a - 1;
    } else if (a < b) {
        answer = b + b - 1;
    }
    
    System.out.println(answer);
  }
} 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 answer = 0;
    
    if (a == b) {
        answer = a + b;
    } else if (a > b) {
        answer = a + a - 1;
    } else if (a < b) {
        answer = b + b - 1;
    }
    
    System.out.println(answer);
  }
}