#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 100000000000


int main(){
	
	int a,b;
	cin>>a>>b;
	
	a *= a;
	a += b*b;
	a *= 4;
	
	for(int i=1;true;i++){
		if(i*i>a){
			cout<<i<<endl;
			return 0;
		}
	}
	
	return 0;
}