#include <bits/stdc++.h>
#define ll long long
#define INF 1000000005
#define MOD 1000000000
#define EPS 1e-10
#define rep(i,n) for(int i=0;i<(int)n;++i)
#define each(a, b) for(auto (a): (b))
#define all(v) (v).begin(),(v).end()
#define zip(v) sort(all(v)),v.erase(unique(all(v)),v.end())
#define fi first
#define se second
#define pb push_back
#define show(x) cout<<#x<<" = "<<(x)<<endl
#define spair(p) cout<<#p<<": "<<p.fi<<" "<<p.se<<endl
#define svec(v) cout<<#v<<":";rep(kbrni,v.size())cout<<" "<<v[kbrni];cout<<endl
#define sset(s) cout<<#s<<":";each(kbrni,s)cout<<" "<<kbrni;cout<<endl
#define smap(m) cout<<#m<<":";each(kbrni,m)cout<<" {"<<kbrni.first<<":"<<kbrni.second<<"}";cout<<endl

using namespace std;

typedef pair<int,int>P;

const int MAX_N = 10005;

ll comb[2][MAX_N];

void make(int N){
    for(int i=1;i<=N;i++){
        comb[0][0] = 1;
        comb[1][0] = 1;
        for(int j=1;j<=i;j++){
            comb[1][j] = (comb[0][j] + comb[0][j-1]) % MOD;
        }
        swap(comb[0],comb[1]);
    }
}


int main()
{
    cin.tie(0);
    ios::sync_with_stdio(false);
    ll n;
    cin >> n;
    int mod;
    cin >> mod;
    ll K = (n / 1000) % mod;
    make(mod);
    cout << comb[0][K] << endl;
    return 0;
}