#include <iostream>

using lint = long long;

void solve() {
    lint x, y;
    std::cin >> x >> y;
    lint r = x * x + y * y;

    lint ok = 1LL << 20, ng = 0;
    while (ok - ng > 1) {
        auto mid = (ok + ng) / 2;
        if (mid * mid > r * 4) {
            ok = mid;
        } else {
            ng = mid;
        }
    }

    std::cout << ok << std::endl;
}

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

    solve();

    return 0;
}