#include <bits/stdc++.h>
using namespace std;
int main(){
  int N, M, P;
  cin >> N >> M >> P;
  vector<vector<long long>> dp(M + 1, vector<long long>(N + 1, 0));
  dp[0][0] = 1;
  for (int i = 0; i < M; i++){
    long long s = 0;
    for (int j = 1; j <= N; j++){
      s += dp[i][j - 1];
      s %= P;
      dp[i + 1][j] = s * j % P;
    }
  }
  vector<long long> inv(N + 1);
  inv[1] = 1;
  for (int i = 2; i <= N; i++){
    inv[i] = P - inv[P % i] * (P / i) % P;
  }
  vector<long long> fact(N + 1);
  vector<long long> finv(N + 1);
  fact[0] = 1;
  finv[0] = 1;
  for (int i = 1; i <= N; i++){
    fact[i] = fact[i - 1] * i % P;
    finv[i] = finv[i - 1] * inv[i] % P;
  }
  auto binom = [&](int n, int k){
    return fact[n] * finv[k] % P * finv[n - k] % P;
  };
  long long S = 0;
  for (int i = 1; i <= M; i++){
    long long sum = 0;
    for (int j = 0; j <= N; j++){
      sum += dp[i][j];
    }
    sum %= P;
    S += sum * binom(M, i) % P * fact[N - i] % P * finv[N - M] % P;
    S %= P;
  }
  S *= fact[N - M] * finv[N] % P;
  S %= P;
  cout << S << endl;
}