using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;

class TEST{
	static void Main(){
		Sol mySol =new Sol();
		mySol.Solve();
	}
}

class Sol{
	public void Solve(){
		
		long l = 0;
		long r = 0;
		long d = 1;
		for(int i=0;i<32;i++){
			if((N >> i) % 2 == 1){
				d *= 2;
				continue;
			}
			r += d;
			l -= d;
			d *= 2;
		}
		
		if(r - d <= K && r - d >= -K){
			Console.WriteLine("INF");
			return;
		}
		
		
		
		int Kmax = 300;
		int Ofs = 2 * Kmax;
		long[] dp = new long[4 * Kmax];
		dp[0 + Ofs] = 1;
		long v = 1;
		for(int i=0;i<31;i++){
			if((N >> i) % 2 == 1){
				v *= 2;
				continue;
			}
			var ndp = new long[4 * Kmax];
			for(int j=0;j< 4 * Kmax;j++){
				if(dp[j] == 0) continue;
				ndp[j] += dp[j];
				if(j + v < 4 * Kmax) ndp[j + v] += dp[j];
				if(j - v >= 0 ) ndp[j - v] += dp[j];
			}
			dp = ndp;
			v *= 2;
		}
		
		long ans = 0;
		for(int i=0;i<=K;i++) ans += dp[i + Ofs];
		Console.WriteLine(ans);
		
	}
	int N,K;
	public Sol(){
		var d = ria();
		N = d[0]; K = d[1];
	}

	static String rs(){return Console.ReadLine();}
	static int ri(){return int.Parse(Console.ReadLine());}
	static long rl(){return long.Parse(Console.ReadLine());}
	static double rd(){return double.Parse(Console.ReadLine());}
	static String[] rsa(char sep=' '){return Console.ReadLine().Split(sep);}
	static int[] ria(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>int.Parse(e));}
	static long[] rla(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>long.Parse(e));}
	static double[] rda(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>double.Parse(e));}
}