#include <stdio.h>
#include <stdlib.h>
#define p(x,y,d) ((x&(1<<(i)))==((y&(1<<(i+d)))>>d))
#define t(x,y) for(int x=0; x<y; x++)


int a[31][99],m,n,d[99][99],k,p=1,s=0;

int l(int z,int b,int k){
	t(i,k-1) if(p(z,z,1)&&p(b,b,1)&&p(b,z,0)) return 0;
	return 1;
}

int main(){
    FILE * f = fopen("input.txt","r"), * F = fopen("output.txt","w");
    fscanf(f,"%i%i",&m,&n);
    if (m<n){k=m;m=n;n=k;}
	t(i,n) p*=2;
	t(i,p) {t(j,p) d[i][j]=l(i,j,n);
	a[0][i]=1;}
	t(j,m-1) t(i,p) t(g,p) a[j+1][i]+=a[j][g]*d[g][i];
	t(i,p) s+=a[m-1][i];
	fprintf(F,"%i",s);
}