#include<fstream>
#include<vector>
#include<string>
#define modo 2000003

using namespace std;
const long long int P = 2000003;

ifstream fin("sandokan.in");
ofstream fout("sandokan.out");


int i, j,contor,st,dr,solution,x,y,m, p;
long long int n, k;

long long power(long long int baza, long long int exponent)
{
    long long x;
    if(exponent == 0) return 1;
    else
    {
        if(exponent % 2 == 1)
        {
            x = power(baza ,exponent / 2);
            return ((x*x)%modo*baza)%modo;
        }
        else
        {
            x = power(baza, exponent/2);
            return (x*x)%modo;
        }
    }
}

long long int factorial (int n)
{
    long long int rez = 1;
    for(i = 2; i <= n; i++)
    {
        rez = (rez * i) % P;
    }
    return rez;
}


int main()
{
    fin >> n >> p;
    k = (((n  % (p - 1)) - 1) + p) % p;
    //fout << k <<"\n";
    n--;

    long long int solution = 1, value = 1;
    solution = factorial(n);
    value = factorial(k);
    solution = (solution * power(value, P - 2)) % P;
    value = factorial(n - k);
    solution = (solution * power(value, P - 2)) % P;
    fout << solution << "\n";
}