#include <iostream>
#include <vector>
#include <algorithm>
#include <map>
#include <queue>
#include <set>
#include <random>
#include <iomanip>
using namespace std;
typedef long long ll;
#define rep(i, n) for(int i = 0; i < (n); i++)

template<class T>
using vi = vector<T>;

template<class T>
using vii = vector<vi<T>>;

template<class T>
using viii = vector<vii<T>>;

void chmax(ll & x, ll y) { x = max(x, y); }

void pf(int n, vi<int>& prime, vi<int>& cnt, bool plus = true) {
    if (n == 1) return;
    if (plus) cnt[prime[n]]++;
    else cnt[prime[n]]--;
    pf(n / prime[n], prime, cnt, plus);
    return;
}

ll modpow(ll x, ll n, ll mod) {
    if (n == 0) return 1LL;
    ll res = modpow(x, n / 2, mod);
    res *= res;
    res %= mod;
    if (n % 2) res *= x;
    res %= mod;
    return res;
}

int main()
{
    int n, m;
    cin >> n >> m;

    vi<int> prime(n + 1);
    prime[1] = 1;
    for (int i = 2; i <= n; i++) {
        if (prime[i]) continue;
        prime[i] = i;
        for (ll j = (ll)i * i; j <= n; j += i) {
            if (prime[j]) continue;
            prime[j] = i;
        }
    }
    prime[1] = 1;

    vi<int> cnt(n + 1);
    m = min(n - m, m);
    rep(i, m) {
        pf(n - i, prime, cnt);
        pf(m - i, prime, cnt, false);
    }

    ll ans = 1;
    const ll mod = 1e8;
    for (int i = 2; i <= n; i++) {
        if (cnt[i] == 0) continue;
        ans *= modpow(i, cnt[i], mod);
        ans %= mod;
    }
    printf("%08d\n", ans);
	return 0;
}