#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic warning "-Wunused-function"
using namespace std;
using namespace atcoder;
#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(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;
using mint = modint;

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, m;
  cin >> n >> m;
  mint::set_mod(m);
  mint ans = 1;
  mint dp[3];
  dp[0] = dp[1] = dp[2] = 1;
  for (int i = 1; i < n - 1; i++) {
    for (int x = 2 * i; x <= 2 * i + 1; x++) {
      mint ndp[3];
      rep(i, 3) ndp[i] = dp[i];
      rep(i, 2) ndp[i+1] += ndp[i];
      rep(i, 2) ndp[i] += x * dp[i+1];
      swap(dp, ndp);
    }
    ans *= dp[2];
    // cout << dp[2].val() << '\n';
  }
  rep(i, 2 * n - 1) ans *= i + 1;
  cout << ans.val() << '\n';
}