#include <iostream>
#include <fstream>
using namespace std;

int eggCount, floorCount;

int work(){
	int res = 0;
	int l = 1, r = floorCount, mid = 0;
	while(eggCount > 1){
		mid = (l + r + 1) / 2;
		r = mid - 1;
		eggCount--;
		res++;
	}
	res += r - l + 1;
	return res;
}

int main(){
	freopen("eagleegg.in", "r", stdin);
	freopen("eagleegg.out", "w", stdout);
	while(cin >> eggCount >> floorCount && eggCount | floorCount){
		cout << work() << endl;
	}
	return 0;
}