#include <bits/stdc++.h>
using namespace std;
using ll = int64_t;
#define rep(i,n) for (int i=0;i<(int)(n);i++)

int gccd(int a,int b){
  if(a==0) return b;
  return gccd(b%a,a);
}

int main(){
  int p,q;
  cin>>p>>q;
  ll ans=p/gccd(p,q-1)+(q-1)/gccd(p,q-1);
  ans+=(p-1)/gccd(p-1,q-1)+(q-1)/gccd(p-1,q-1);
  cout<<ans<<endl;
}