#include <bits/stdc++.h>
using namespace std;
pair<long long, long long> get(vector<long long> C){
  int N = C.size();
  reverse(C.begin(), C.end());
  long long P = 1, Q = 0;
  for (long long x : C){
    swap(P, Q);
    P += Q * x;
  }
  return make_pair(P, Q);
}
int main(){
  long long P, Q;
  cin >> P >> Q;
  vector<long long> C;
  while (Q > 1){
    C.push_back(P / Q);
    P %= Q;
    swap(P, Q);
  }
  C.push_back(P);
  C.back()--;
  pair<long long, long long> ans1 = get(C);
  C.pop_back();
  pair<long long, long long> ans2 = get(C);
  cout << ans1.first + ans1.second + ans2.first + ans2.second << endl;
}