import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        
        Scanner sc = new Scanner(System.in);

        int A = sc.nextInt();
        int B = sc.nextInt();
        
        int ans = 0;
        for (int i = 0; i < 2; i++) {
            if ( A > B ) {
                ans += A;
                A--;
            } else {
                ans += B;
                B--;
            }
        }
        
        System.out.println(ans);
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        
        Scanner sc = new Scanner(System.in);

        int A = sc.nextInt();
        int B = sc.nextInt();
        
        int ans = 0;
        for (int i = 0; i < 2; i++) {
            if ( A > B ) {
                ans += A;
                A--;
            } else {
                ans += B;
                B--;
            }
        }
        
        System.out.println(ans);
    }
} Main public static void main(String[] args) throws Exception {
        
        Scanner sc = new Scanner(System.in);

        int A = sc.nextInt();
        int B = sc.nextInt();
        
        int ans = 0;
        for (int i = 0; i < 2; i++) {
            if ( A > B ) {
                ans += A;
                A--;
            } else {
                ans += B;
                B--;
            }
        }
        
        System.out.println(ans);
    } main {
        
        Scanner sc = new Scanner(System.in);

        int A = sc.nextInt();
        int B = sc.nextInt();
        
        int ans = 0;
        for (int i = 0; i < 2; i++) {
            if ( A > B ) {
                ans += A;
                A--;
            } else {
                ans += B;
                B--;
            }
        }
        
        System.out.println(ans);
    } 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 ans = 0; ans 0 for (int i = 0; i < 2; i++) {
            if ( A > B ) {
                ans += A;
                A--;
            } else {
                ans += B;
                B--;
            }
        } int i = 0; int i = 0; i 0 i < 2 i 2 i++ i++ i {
            if ( A > B ) {
                ans += A;
                A--;
            } else {
                ans += B;
                B--;
            }
        } {
            if ( A > B ) {
                ans += A;
                A--;
            } else {
                ans += B;
                B--;
            }
        } if ( A > B ) {
                ans += A;
                A--;
            } else {
                ans += B;
                B--;
            } A > B A B {
                ans += A;
                A--;
            } ans += A ans A A-- A {
                ans += B;
                B--;
            } ans += B ans B B-- B System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {
    public static void main(String[] args) throws Exception {
        
        Scanner sc = new Scanner(System.in);

        int A = sc.nextInt();
        int B = sc.nextInt();
        
        int ans = 0;
        for (int i = 0; i < 2; i++) {
            if ( A > B ) {
                ans += A;
                A--;
            } else {
                ans += B;
                B--;
            }
        }
        
        System.out.println(ans);
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        
        Scanner sc = new Scanner(System.in);

        int A = sc.nextInt();
        int B = sc.nextInt();
        
        int ans = 0;
        for (int i = 0; i < 2; i++) {
            if ( A > B ) {
                ans += A;
                A--;
            } else {
                ans += B;
                B--;
            }
        }
        
        System.out.println(ans);
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        
        Scanner sc = new Scanner(System.in);

        int A = sc.nextInt();
        int B = sc.nextInt();
        
        int ans = 0;
        for (int i = 0; i < 2; i++) {
            if ( A > B ) {
                ans += A;
                A--;
            } else {
                ans += B;
                B--;
            }
        }
        
        System.out.println(ans);
    }
}
