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

int main(){
    long x,y,l=0,r=1<<30,mid;
    cin>>x>>y;
    while(l<r){
        mid=(l+r)>>1;
        if(mid*mid<=4*(x*x+y*y))l=mid+1;
        else r=mid;
    }
    cout<<l<<endl;
}