#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

int rnd(double x) {
  double ret;
  ret = round(x * 100000) / 100000;
  return round(ret);
}

int main(void) {
#ifdef DEBUG
  freopen("input.txt", "r", stdin);
#endif

  ios_base::sync_with_stdio(false);
  cin.tie(NULL);

  int A, B;
  cin >> A >> B;

  double a, b;
  a = A ? 1 : 0;
  b = B ? 1 : 0;
  int a_, b_;
  while (1) {
    if (A) {
      a_ = rnd(a / (a + b) * 100);
      if (a_ < A) {
        a++;
        continue;
      } else if (a_ > A) {
        b++;
        continue;
      }
      if (B) {
        b_ = rnd(b / (a + b) * 100);
        if (b_ < B) {
          b++;
          continue;
        } else if (b_ > B) {
          a++;
          continue;
        }
      }
    }
    break;
  }
  cout << a + b << endl;
  return 0;
}