#include <iostream>
#include <cmath>
#include <algorithm>
#include <vector>
#include <cstring>
#include <deque>
#include <stack>
#include <stdio.h>
#include <map>
#include <set>
#include <time.h>
#include <string>
#include <fstream>
#include <queue>
#include <bitset>
#include <cstdlib>
#define X first
#define Y second
#define mp make_pair
#define pb push_back
#define pdd pair<double,double>
#define pii pair<ll,ll>
#define PI 3.14159265358979323846
#define MOD 1000000007
#define MOD2 1000000009
#define INF (1LL+(ll)1e+15)
#define x1 fldgjdflgjhrthrl
#define x2 fldgjdflgrtyrtyjl
#define y1 fldggfhfghjdflgjl
#define y2 ffgfldgjdflgjl
#define N 100500
#define mx 112
#define sqval 1000
#define eps 1e-9
#define BLACK 0
#define WHITE 1
#define MAG 1000
typedef long long ll;
typedef long double ld;
using namespace std;
ll n,m,a[15][15],i,j,k,l,x,y,z;
int main() {
	//freopen("input.txt","r",stdin);
	//freopen("output.txt","w",stdout);
	cin >> n >> m;
	m *= 1024;
	a[0][0] = m;
	for (i = 0; i < n; i++)
	{
		for (j = 0; j <= i; j++)
			{

			   if (a[i][j] >= 1024)
			   {
				k++;

				a[i][j] -= 1024;
				}
				a[i+1][j] += a[i][j]/2;
				a[i+1][j+1] += a[i][j]/2;
			}
	}
	cout << k << endl;
	return 0;
}