#include <stdio.h>
#include <stdlib.h>

int map[51][51]={0};

int triangle(int r, int c){

	if(r==c || r==0 || c==0)
		return 1;
	else{	
		if(map[r][c]!=0) return map[r][c];

		return map[r][c]=(triangle(r-1,c)+triangle(r-1,c-1))%100000000;
	}
}

int main(){

	int r,c;
	scanf("%d %d",&r, &c);

	printf("%3d ", triangle(r+(c-2),c-1));

	return 0;
}