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

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    long long R,B; cin >> R >> B;
    vector<long long> Rs,Bs;

    long long greedy = -1;
    for(long long i=1; ; i++){
        long long need = i*i;
        if(R >= need) R -= need;
        else if(B >= need) B -= need;
        else{greedy = i; break;}
    }
    cout << greedy-1 << endl;
}