#include <bits/stdc++.h>
using namespace std;
const long long N = 2e3 + 5, mod = 998244353, inf = 1e18 + 7;
long long dp[N][N];
signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  long long n, m, k;
  cin >> n >> m >> k;
  for (long long i = 0; i <= n; i++) {
    dp[i][0] = m;
  }
  for (long long i = 2; i <= n; i++) {
    for (long long j = 1; j <= k; j++) {
      dp[i][j] = (dp[i - 1][j - 1] * (m - 1)) % mod;
      dp[i][j] = (dp[i][j] + dp[i - 1][j]) % mod;
    }
  }
  cout << dp[n][k];
}
