#include <bits/stdc++.h>
using namespace std;
using pint = pair< int, int >;

int main()
{
    pint pos {};
    cin >> pos.first >> pos.second;
    const double d = sqrt( pos.first * pos.first + pos.second * pos.second ) * 2;
    cout << ( d - floor( d ) > 0 ? ceil( d ) : d + 1 ) << endl;
}