#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 memoR = R,memoB = B;

    long long greedy = -1,greedy2 = -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;}
    }
    R = memoR,B = memoB;
    for(long long i=1; ; i++){
        long long need = i*i;
        if(B >= need) B -= need;
        else if(R >= need) R -= need;
        else{greedy2 = i; break;}
    }

    cout << max(greedy,greedy2)-1 << endl;
}