#include <bits/stdc++.h> 
using namespace std;
#include <stdio.h>
#include <iomanip>
#include <iostream>
#include <string>
#include <algorithm>

int main(){
  int a, b;
  cin >> a >> b;
  int c = min(a, b);
  if(a==b){
    cout << c*2-1;
  }
  else{
  cout << c*2;
  }
}