#include <bits/stdc++.h>
using namespace std;

using ll = long long;

int main() {
    ll A, B;
    cin >> A >> B;
    ll ans;
    if(A < B-1) {
        cout << (A*2+1) + 2*((B-1)-A) << endl;
        return 0;
    }
    if(A > B+1){
        cout << (B*2+1) + 2*(A-(B+1)) << endl;
        return 0;
    }
    cout << A+B << endl;
    return 0;
}