#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <cmath>
using namespace std;
using ll = long long;

int main() {
    int x, y;
    cin >> x >> y;

    int p[100] = { 72,96,96,96,96,96,96,96,128,96,128,128,108,128,128,96,128,128,96,128,144,128,128,128,128,128,144,144,128,144,128,128,128,128,144,128,128,128,144,128,160,144,128,144,128,144,144,128,128,144,144,160,144,144,144,128,160,144,144,192,128,144,128,144,144,192,128,128,144,144,144,128,144,160,144,144,144,144,144,128,160,144,144,192,192,144,128,160,128,144,144,144,144,128,144,144,160,192,144,144, };
    
    int m = 0;
    for (int r = x; r <= y; r++) {
        if (r % 100000 == 1) {
            for (int i = r / 100000; i < y / 100000; i++) {
                m = max(m, p[i]);
            }
            r = y / 100000 * 100000 + 1;
        }
        int b = 0, c = 0;
        for (int a = (int)sqrt(r); b = (int)sqrt(r - a * a), a >= b; a--) {
            if (a * a + b * b == r) {
                c++;
                if (a > b && b != 0) c++;
            }
        }
        m = max(m, c * 4);
    }

    cout << m << endl;

    return 0;
}