#include<iostream>
#include <vector>
#include <set>
#include <map>
#include <string>
#include <cstdio>
#include <cstdlib>
#include <climits>
#include <utility>
#include <algorithm>
#include <cmath>
#include <queue>
#include <stack>
#include <iomanip>
#include<unordered_map>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
const long long int mod1=1000000007;
const long long int mod2 = -1;
#define fast ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define pb push_back
#define pp pop_back                                       
#define ff first
#define ss second
#define ll long long int
#define ull unsigned long long int
#define ordered_set tree<ll,null_type,less_equal<ll>,rb_tree_tag,tree_order_statistics_node_update>
#define ordered1 tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>
#define inf mod1
#define all(x) x.begin(),x.end()
ll gcd(ll a, ll b){
    ll c;
     while(b){
        c = b;
        b = a % b;
        a = c;
     }
     return a;
}
ll power1(ll a, ll b){
     if(b == 0) return 1;
     else if(b % 2) return a * power1(a, b - 1);
     else {
        ll temp = power1(a, b / 2);
        return temp * temp;
     }
}
ll power2(ll a, ll b, ll m){
     a %= m;
     if(b == 0) return 1;
     else if(b % 2) return (a * power2(a, b - 1, m)) % m;
     else{
        ll temp = power2(a, b / 2, m);
        return (temp * temp) % m;
     }
}
ll mod(ll x, ll p){
return (x % p + p) % p;
}
ll lcm(ll x, ll y){
return (x * y)/gcd(x, y);
}
int main(){
    fast;
    ll h = 1;
    //cin >> h;
    ll st = 1;
    while(h--){
        ll d1, d2;
        cin >> d1 >> d2;
        double x = sqrt(d1);
        double y = sqrt(d2) / sqrt(2);
        if(d1 == d2 || 2 * d1 == d2){
            cout << 4 << endl;
        }
        else if(2 * d1 < d2 || d1 > d2){
            cout << 0 << endl;
        }
        else{
            cout << 8 << endl;
        }
    }
}