#include <stdio.h>
extern int putchar_unlocked(int);
#define	ll	long long
#define	pc(d)	putchar_unlocked(d)
void outl(ll n) {
	int i;
	char b[70];
	if (!n) pc('0');
	else {
		if (n < 0) pc('-'), n = -n;
		i = 0; while (n) b[i++] = n % 10 + '0', n /= 10;
		while (i--) pc(b[i]);
	}
	pc('\n');
}
// *********************
int main( void ) {
	int	x,k;
	scanf("%d%d",&x,&k);
	outl( (1<<x)/(1<<k) );
}