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

#define LOG(FMT...) fprintf(stderr, FMT)

typedef long long LL;
const int N = 10000005, PC = 664600;
const int mod = 100000000;

int pr[PC], cnt;
bool ws[N];

void sieve() {
	for (int i = 2; i < N; ++i) {
		if (!ws[i]) {
			pr[cnt++] = i;
		}
		for (int j = 0; i * pr[j] < N; ++j) {
			ws[i * pr[j]] = true;
			if (i % pr[j] == 0) {
				break;
			}
		}
	}
}

int p;

int calc(int x) {
	int k = 0;
	while (x) {
		k += x /= p;
	}
	return k;
}

int main() {
	sieve();
	int n, m;
	scanf("%d%d", &n, &m);
	if (n < m) {
		printf("%08d\n", 0);
		return 0;
	}
	int r = 1;
	for (int i = 0; i < cnt; ++i) {
		p = pr[i];
		int k = calc(n) - calc(m) - calc(n - m);
		while (k) {
			if (k & 1) r = p * (LL)r % mod;
			p = p * (LL)p % mod;
			k >>= 1;
		}
	}
	printf("%08d\n", r);
	return 0;
}