#include <bits/stdc++.h>
#define rep(i, a, n) for (int i = a; i < n; i++)
#define repr(i, a, n) for (int i = n - 1; i >= a; i--)
using namespace std;
using ll = long long;
using P = pair<int, int>;
template <typename T> void chmin(T &a, T b) { a = min(a, b); }
template <typename T> void chmax(T &a, T b) { a = max(a, b); }

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);

  int x, y;
  cin >> x >> y;

  ll ans = 0;
  if (x == 0)
    ans = y * 2;
  else if (y == 0)
    ans = x * 2;
  else {
    int abs_x = abs(x - 0);
    int abs_y = abs(y - 0);
    ans = hypot(abs_x, abs_y) * 2;
  }

  cout << ans + 1 << endl;
}