#include <iostream>
#include <iomanip>
#include <cmath>
#include <string>
#include <vector>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
#include <queue>
#include <numeric>
#include <random>
#include <algorithm>
#include <functional>
#include <cassert>

using namespace std;
typedef long long ll;

template<class T> inline bool chmin(T& a, T b) {
  if (a > b) {
    a = b;
    return true;
  }
  return false;
}
template<class T> inline bool chmax(T& a, T b) {
  if (a < b) {
    a = b;
    return true;
  }
  return false;
}

const int INF = (1 << 30) - 1;
const ll INFLL= (1LL << 61) - 1;
const int MOD = 998244353;
#define ALL(a) (a).begin(),(a).end()
#define rALL(a) (a).rbegin(),(a).rend()
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)

template<int Modulo = MOD>
struct Mint {
	ll val;
	constexpr Mint(ll v = 0) noexcept : val(v % Modulo) { if (val < 0) val += Modulo; }

	constexpr Mint& operator += (const Mint &r) noexcept {
		val += r.val;
		if (val >= Modulo) val -= Modulo;
		return *this;
	}
	constexpr Mint& operator -= (const Mint &r) noexcept {
		val -= r.val;
		if (val < 0) val += Modulo;
		return *this;
	}
	constexpr Mint& operator *= (const Mint &r) noexcept {
		val = val * r.val % Modulo;
		return *this;
	}
	constexpr Mint& operator /= (const Mint &r) noexcept {
		ll a = r.val, b = Modulo, u = 1, v = 0;
		while (b) {
			ll t = a / b;
			a -= t * b; swap(a, b);
			u -= t * v; swap(u, v);
		}
		val = val * u % Modulo;
		if (val < 0) val += Modulo;
		return *this;
	}

	constexpr Mint operator + (const Mint &r) const noexcept { return Mint(*this) += r; }
	constexpr Mint operator - (const Mint &r) const noexcept { return Mint(*this) -= r; }
	constexpr Mint operator * (const Mint &r) const noexcept { return Mint(*this) *= r; }
	constexpr Mint operator / (const Mint &r) const noexcept { return Mint(*this) /= r; }

	constexpr int getmod() { return Modulo; }
	constexpr Mint operator - () const noexcept { return val ? Modulo - val : 0; }

	constexpr bool operator == (const Mint &r) const noexcept { return val == r.val; }
	constexpr bool operator != (const Mint &r) const noexcept { return val != r.val; }

	friend ostream &operator << (ostream &os, const Mint<Modulo> &x) noexcept { return os << x.val; }
	friend istream &operator >> (istream &is, Mint<Modulo> &x) noexcept {
		ll tmp; is >> tmp;
		x = Mint(tmp);
		return is;
	}

	constexpr Mint pow(ll n) noexcept {
		Mint res{ 1 }, tmp{ val };
		while (n > 0) {
			if (n & 1) res *= tmp;
			tmp *= tmp;
			n >>= 1;
		}
		return res;
	}
};
using mint = Mint<>;

int MAX=510000;
vector<mint>fac(MAX),finv(MAX),inv(MAX);
void COMinit() {
  fac[0]=fac[1]=finv[0]=finv[1]=inv[1]=(mint)1;
  FOR(i,2,MAX){
    fac[i]=fac[i-1]*i;
    inv[i]=-inv[MOD%i]*(MOD/i);
    finv[i]=finv[i-1]*inv[i];
  }
}

mint COM(int N,int K){
  if(N<K || N<0 || K<0) return 0;
  return fac[N]*(finv[K]*finv[N-K]);
}

int main(){
  cin.tie(nullptr);
  ios::sync_with_stdio(false);
  int N,M,K;
  cin>>N>>M>>K;
  COMinit();
  mint ans=0;
  REP(i,K+1){
    mint tmp=COM(N-1,i);
    tmp=tmp*M;
    tmp=tmp*mint(M-1).pow(N-i-1);
    ans=ans+tmp;
  }
  cout<<ans<<endl;
}


Measured memory_bytes: 14996