#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
typedef long long ll;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define repr(i, n) for (int i = (int)(n) - 1; i >= 0; i--)
#define repk(i, k, n) for (int i = k; i < (int)(n); i++)
#define all(v) v.begin(), v.end()
#define mod1 1000000007
#define mod2 998244353
#define mod3 100000007
#define vi vector<int>
#define vs vector<string>
#define vc vector<char>
#define vl vector<ll>
#define vvi vector<vector<int>>
#define vvc vector<vector<char>>
#define vvl vector<vector<ll>>
#define vvvi vector<vector<vector<int>>>
#define vvvl vector<vector<vector<ll>>>
#define pii pair<int,int>
#define pil pair<int,ll>
#define pli pair<ll, int>
#define pll pair<ll, ll>
#define vpii vector<pair<int,int>>
#define vpll vector<pair<ll,ll>>
#define vvpii vector<vector<pair<int,int>>>
#define vvpll vector<vector<pair<ll,ll>>>

template<typename T> void debug(T e){
    cerr << e << endl;
}

template<typename T> void debug(vector<T> &v){
    rep(i, v.size()){
        cerr << v[i] << " ";
    }
    cerr << endl;
}

template<typename T> void debug(vector<vector<T>> &v){
    rep(i, v.size()){
        rep(j, v[i].size()){
            cerr << v[i][j] << " ";
        }
        cerr << endl;
    }
}

template<typename T> void debug(vector<pair<T, T>> &v){
    rep(i,v.size()){
        cerr << v[i].first << " " << v[i].second << endl;
    }
}

template<typename T> void debug(set<T> &st){
    for (auto itr = st.begin(); itr != st.end(); itr++){
        cerr << *itr << " ";
    }
    cerr << endl;
}

template<typename T> void debug(multiset<T> &ms){
    for (auto itr = ms.begin(); itr != ms.end(); itr++){
        cerr << *itr << " ";
    }
    cerr << endl;
}

template<typename T> void debug(map<T, T> &mp){
    for (auto itr = mp.begin(); itr != mp.end(); itr++){
        cerr << itr->first << " " << itr->second << endl;
    }
}

void debug_out(){
    cerr << endl;
}

template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T){
    cerr << H << " ";
    debug_out(T...);
}

ll my_pow(ll x, ll n, ll mod){
    //　繰り返し二乗法．x^nをmodで割った余り．
    ll ret;
    if (n == 0){
        ret = 1;
    }
    else if (n % 2 == 1){
        ret = (x * my_pow((x * x) % mod, n / 2, mod)) % mod;
    }
    else{
        ret = my_pow((x * x) % mod, n / 2, mod);
    }
    return ret;
}

int main(){
    ll M, N;
    cin >> M;
    cin >> N;

    ll mod = 100000000;

    vector<ll> prime(M + 2, -1);
    for (ll i = 2; i <= M + 1; i++){
        if (prime[i] == -1){
            for (ll j = 2; j * i <= M + 1; j++){
                prime[j * i] = i;
            }
        }
    }
    //debug(prime);
    vector<ll> counter(M + 1, 0);
    for (ll i = 2; i <= M; i++){
        ll now = i;
        while(true){
            if (prime[now] == -1){
                counter[now]++;
                break;
            }
            else{
                counter[prime[now]]++;
                now /= prime[now];
            }
        }
    }
    for (ll i = 2; i <= N; i++){
        ll now = i;
        while(true){
            if (prime[now] == -1){
                counter[now]--;
                break;
            }
            else{
                counter[prime[now]]--;
                now /= prime[now];
            }
        }
    }
    for (ll i = 2; i <= (M - N); i++){
        ll now = i;
        while(true){
            if (prime[now] == -1){
                counter[now]--;
                break;
            }
            else{
                counter[prime[now]]--;
                now /= prime[now];
            }
        }
    }
    ll ans = 1;
    for (ll i = 2; i <= M; i++){
        if (counter[i] != 0){
            ans = (ans * my_pow(i, counter[i], mod)) % mod;
        }
    }
    string sans = to_string(ans);
    for (ll i = 0; i < 8 - sans.size(); i++) cout << '0';
    cout << ans << endl;
}