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

int main(){
	double r=(double)27/54;
	double d1,d2; cin>>d1>>d2;
	
	if(d1==d2||(double)d1/d2==r) cout << 4 << endl;
	else if(d1<(double)d2/2||d1>d2) cout << 0 << endl;
	else cout << 8 << endl;	
}