#pragma GCC optimize("O3")

#include <bits/stdc++.h>

using namespace std;

#define rep(i,n) for(int i = 0; i < (int)(n); ++i)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; --i)
#define ALL(a) a.begin(), a.end()
#define Sort(a) sort(a.begin(), a.end())
#define RSort(a) sort(a.rbegin(), a.rend())

typedef long long int ll;
typedef long double ld;
typedef vector<int> vi;
typedef vector<long long> vll;
typedef vector<char> vc;
typedef vector<string> vst;
typedef vector<double> vd;
typedef pair<long long, long long> P;

const long long INF = 0x1fffffffffffffff;
const long long MOD = 1000000007;
const long double PI = acos(-1);
 
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
template<class T, class U> inline T vin(T& vec, U n) { vec.resize(n); for(int i = 0; i < (int) n; ++i) cin >> vec[i]; return vec; }
template<class T> inline void vout(T vec, string s = "\n"){ for(auto x : vec) cout << x << s; }
template<class... T> void in(T&... a){ (cin >> ... >> a); }
void out(){ cout << '\n'; }
template<class T, class... Ts> void out(const T& a, const Ts&... b){ cout << a; (cout << ... << (cout << ' ', b)); cout << '\n'; }
template<class T, class U> void inGraph(vector<vector<T>>& G, U n, U m, bool directed = false){ G.resize(n); for(int i = 0; i < m; i++){ int a, b; cin >> a >> b; a--, b--; G[a].push_back(b); if(!directed) G[b].push_back(a); } }

vector<int> spf;
vector<ll> mul;

void init(int N){
    spf.assign(N + 1, 0);
    for(int i = 0; i <= N; i++) spf[i] = i;
    for(int i = 2; i * i <= N; i++) {
        if(spf[i] == i) {
            for(int j = i * i; j <= N; j += i){
                if(spf[j] == j){
                    spf[j] = i;
                }
            }
        }
    }
}

void get(int n){
    while(n != 1){
        mul.emplace_back(spf[n]);
        n /= spf[n];
    }
}

template <typename T>
T modpow(T x, T n, const T &m){
    T ret = 1 % m;
    x %= m;
    while(n > 0){
        if(n & 1) (ret *= x) %= m;
        (x *= x) %= m;
        n >>= 1;
    }
    return ret;
}

ll m, n;

void input(){
    in(m, n);
}
 
void solve(){
    if(m < n){
        out("00000000");
        return;
    }
    ll mod = 100000000;
    n = min(n, m - n);
    ll mn = m - n + 1;
    vector<ll> mul(m + 1);
    init(m);
    for(int i = 2; i <= n; i++){
        int f = i;
        while(f != 1){
            mul[spf[f]]--;
            f /= spf[f];
        }
    }
    vector<int> p;
    for(int i = mn; i <= m; i++){
        int f = i;
        while(f != 1){
            mul[spf[f]]++;
            if(mul[spf[f]] == 1) p.emplace_back(spf[f]);
            f /= spf[f];
        }
    }
    ll ans = 1;
    for(int x : p){
        ans *= modpow((ll) x, mul[x], mod);
        ans %= mod;
    }
    string ans2 = to_string(ans);
    while(ans2.size() < 8){
        ans2 = '0' + ans2;
    }
    out(ans2);
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    
    input();
    solve();
}