#include <bits/stdc++.h>
using namespace std;

int main() {
    int64_t x, y;
    cin >> x >> y;
    int64_t g[10000001]{};
    for (int64_t i = -10000; i <= 10000; i++) {
        for (int64_t j = -10000; j <= 10000; j++) {
            int64_t d2 = i * i + j * j;
            if (d2 <= 10000000) {
                g[d2]++;
            }
        }
    }
    int64_t ans = -1;
    for (int64_t i = x; i <= y; i++) {
        ans = max(ans, g[i]);
    }
    cout << ans << endl;
    return 0;
}