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

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

auto solve = [](long long R,long long B) -> long long {
    long long ans1 = -1,border = -1;
    for(long long i=1; ; i++){
        long long need = i*i;
        if(R >= need) R -= need;
        else if(B >= need){
            if(border == -1) border = i; 
            B -= need;
        }
        else{ans1 = i; break;}
    }
    for(long long i=border-1; i>=1; i--){
        long long need = i*i;
        if(B >= need) B -= need,R += need;
    }
    for(;; ans1++){
        long long need= ans1*ans1;
        if(R >= need) R -= need;
        else{ans1--; break;}
    }
    return ans1;
};
    long long R,B; cin >> R >> B;
    cout << max(solve(R,B),solve(B,R)) << endl;
}