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

using ll = long long;
using ull = unsigned long long;
using ld = long double;
template<class t> using vc = vector<t>;
template<class t> using vvc = vc<vc<t>>;
using pi = pair<int,int>;
using vi = vc<int>;
using vvi = vvc<int>;

#define rep(i,a,b) for (int i = a; i < b; i++)
#define irep(i,a,b) for (int i = a; i > b; i--)
#define print(n) cout << n << endl
#define pritn(n) print(n)
#define rup(a,b) (a+b-1)/b
#define input(A,N) rep(i,0,N) cin>>A[i];


int main(){
    cout << fixed << setprecision(15);
    
    ll x,y;
    cin>>x>>y;
    if (x==0 && y == 0){
        print(0);
        return 0;
    }
    ll d = x*x + y*y;
    ll right = d;
    ll left = -1;
    while(right-left>1){
        ll mid = (right+left)/2;
        if (mid * mid > d) right = mid;
        else left = mid;
    }
    if (pow(right-0.5,2)>d) print(2*right-1);
    else print(2*right);
    
    //system("pause");
    return 0;
}