#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) {
        ans = (A*2+1) + 2*((B-1)-A);
    }else if(A > B+1){
        ans = (B*2+1) + 2*(A-(B+1));
    }else {
        ans = min((A*2)+1, (B*2)+1);
    }
    cout << ans << endl;
    return 0;
}