#include <bits/stdc++.h>

using namespace std;
using ll = long long;

constexpr int N = 1e7 + 1;
int t = 0;
pair<int, int> q[N];

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n, m;
    cin >> n >> m;

    q[t++] = {1, 2};
    q[t++] = {2, 1};
    int s = 0;
    while (t) {
        auto [a, b] = q[--t];
        s += 1;
        if (a + b * 2 <= n) {
            q[t++] = {a + b * 2, b};
        }
        if (b + a * 2 <= m) {
            q[t++] = {a, b + a * 2};
        }
    }

    cout << s << '\n';

    return 0;
}