#include <bits/stdc++.h>

constexpr int64_t MAXN = 3e7;

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

  int n, m;
  std::cin >> n >> m;

  // std::vector vis(std::max(n, m) + 1, std::vector<bool>(std::max(n, m) + 1));
  int64_t ans = 0;
  auto next = [&](int a, int b) -> std::array<std::pair<int, int>, 2> {
    // std::vector<std::pair<int, int>> nxt{{b, a}, {a + 2 * b, b}};
    // if (a > 2 * b) {
    //   nxt.emplace_back(a - 2 * b, b);
    // }
    // return nxt;
    return {std::pair{a + 2 * b, b}, std::pair{a, b + 2 * a}};
  };
  auto dfs = [&](auto &self, int a, int b) -> void {
    if (1 <= a && a <= n && 1 <= b && b <= m) {
      ans += 1;
    }
    if (1 <= a && a <= m && 1 <= b && b <= n) {
      ans += 1;
    }
    for (auto [na, nb] : next(a, b)) {
      if (1 <= na && na <= std::max(n, m) && 1 <= nb && nb <= std::max(n, m)) {
        self(self, na, nb);
      }
    }
  };
  dfs(dfs, 1, 2);
  std::cout << ans << '\n';
}