#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;
    if(R > B) swap(R,B);
    
    long long S2 = -1;
    long long n = 13,n2 = 1<<n;
    set<long long> Se;
    for(long long i=0; i<n2; i++){
        long long r = 0,b = 0;
        for(long long k=0; k<n; k++){
            if(i&(1<<k)) r += (k+1)*(k+1);
            else b += (k+1)*(k+1); 
        }
        if(r <= b) Se.insert(r);
    }
    long long sum = R+B,now = 0,ans = -1;
    for(long long i=1; ; i++){
        if(now+i*i > sum){ans = i-1; break;}
        now += i*i; 
    }
    auto itr = Se.end(); itr--;
    if(*itr < R) cout << ans << endl;
    else{
        long long maxs = 0;
        for(auto s : Se){
            if(s > R) break;
            maxs = s;
        }
        R = maxs;
        sum = R+B,now = 0,ans = -1;
        for(long long i=1; ; i++){
            if(now+i*i > sum){ans = i-1; break;}
            now += i*i;
        }
        cout << ans << endl;
    }
}