#include<bits/stdc++.h>
using namespace std;
 
int n,d;
int a,b;
int ans;
 
int main(){
  cin>>n>>d;
  a=n;
  b=d;
  while(a!=b){
    if(a>b)a-=b;
    else b-=a;
  }
  int ans=(n/a)-1;
  cout<<ans<<endl;
}