#include <bits/stdc++.h>
#define int int64_t
#define REP(i, n) for (int i = 0; (i) < (int)(n); ++ (i))
#define REP3(i, m, n) for (int i = (m); (i) < (int)(n); ++ (i))
#define REP_R(i, n) for (int i = (int)(n) - 1; (i) >= 0; -- (i))
#define REP3R(i, m, n) for (int i = (int)(n) - 1; (i) >= (int)(m); -- (i))
#define REPP(i, n) for (int i = 1; (i) < (int)(n+1); ++ (i))
#define REPR(i, n) for (int i = (int)(n) - 1; (i) >= 0; -- (i))
#define REPRP(i, n) for (int i = (int)(n); (i) >= 0; -- (i))
#define FOR(i, m, n) for(int i = m; i < n; i++)
#define FORP(i, m, n) for(int i = m; i < n+1; i++)
#define FORR(i, a, b) for(int i=(b)-1; i>=(a); i--)
#define ALL(v) v.begin(), v.end()
#define SZ(a) int((a).size())
#define SORT(c) sort((c).begin(),(c).end())
#define SORTR(c) sort((c).begin(),(c).end(),greater<int>());
#define BIT(n) (1LL<<(n))
#define PCNT(x) __builtin_popcountll(x)
#define GCD(x,y) __gcd(x,y)
#define LCM(x,y) x/__gcd(x,y)*y
#define PB push_back
#define MP make_pair
#define endl "\n"
#define pa cout << ans << endl
#define p(x) cout << x << endl
#define pall(x) for(auto iter : x) p(iter)
#define yes cout << "Yes" << endl
#define no cout << "No" << endl
#define yn(x) cout << (x ? "Yes" : "No") << endl
using namespace std;
typedef long double LD;
typedef vector<int> VI;
typedef vector<vector<int> > VVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef vector<PII> VPII;
using Graph = vector<vector<int> >;
using WeightedGraph = vector<vector<pair<int, int> > >;
const int INF = 2000000000ll;
const long double PI = acosl(-1);
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }

const int MOD = 998244353;

int power(int a, int b) {return b?power(a*a,b/2)*(b%2?a:1):1;}
int perm(int N, int K){
    int x=1;
    for(int i=1;i<=K;i++)
    {
        x=x*(N-i+1);
    }
    return x;
}
int factorial(int N) {return perm(N,N);}
int comb(int N,int K) {return factorial(N)/factorial(K)/factorial(N-K);}
int hcomb(int N, int K) {return comb(N+K-1, N-1);}

int dtoi(double d) {return round(d);}

int isprime(int n) {
    if (n < 2) return 0;
    for (int i = 2; i*i <= n; ++i) {
        if (n % i ==  0) return 0;
    }
    return 1;
}

int mystoi(string S){
    int num = 0;
    for (int i = (int) S.length()-1; i >= 0; i--){
        num += (S[i]-'0') * power(10,S.length()-1-i);
    }
    return num;
}

template<class T>
int SUM(T a) {
    int sum = 0;
    for(auto iter : a) sum += iter;
    return sum;
}

int modpow(int a, int b){return b?modpow(a*a%MOD,b/2)*(b%2?a:1)%MOD:1;}

int modperm(int N, int K){
    int x=1;
    for(int i=1;i<=K;i++)
    {
        x=x*(N-i+1)%MOD;
    }
    return x%MOD;
}

int modfactorial(int N) {return modperm(N,N);}

int modcomb(int N,int K){
    if (K < 0 || N < K) return 0;
    int x=1,y=1;
    for(int i=1;i<=K;i++)
    {
        x=x*(N-i+1)%MOD;
        y=y*i%MOD;
    }
    return x*modpow(y,MOD-2)%MOD;
}

int modhcomb(int N, int K) {return modcomb(N+K-1, N-1);}

struct mint {
    int x;
    constexpr mint(int x=0) : x((x%MOD+MOD)%MOD) {}
    constexpr mint operator-() const {
      return mint(-x);
    }
    constexpr mint& operator+=(const mint& a) {
        if ((x += a.x) >= MOD) x -= MOD;
        return *this;
    }
    constexpr mint& operator-=(const mint& a) {
        if ((x += MOD-a.x) >= MOD) x -= MOD;
        return *this;
    }
    constexpr mint& operator*=(const mint& a) {
        (x *= a.x) %= MOD;
        return *this;
    }
    constexpr mint operator+(const mint& a) const {
        mint res(*this);
        return res+=a;
    }
    constexpr mint operator-(const mint& a) const {
        mint res(*this);
        return res-=a;
    }
    constexpr mint operator*(const mint& a) const {
        mint res(*this);
        return res*=a;
    }
    constexpr mint pow(int t) const {
        if (!t) return 1;
        mint a = pow(t>>1);
        a *= a;
        if (t&1) a *= *this;
        return a;
    }

    // for prime mod
    constexpr mint inv() const {
        return pow(MOD-2);
    }
    constexpr mint& operator/=(const mint& a) {
        return (*this) *= a.inv();
    }
    constexpr mint operator/(const mint& a) const {
        mint res(*this);
        return res/=a;
    }
};
istream& operator>>(istream& is, const mint& a) { return is >> a.x;}
ostream& operator<<(ostream& os, const mint& a) { return os << a.x;}



void solve(int N, int M, int K);

signed main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    cout << fixed << setprecision(10);
    int N, M, K;
    cin >> N >> M >> K;
    solve(N, M, K);
    return 0;
}


void prepare_comb(int N, VI &fact, VI &invfact) {
    fact.resize(N+1);
    invfact.resize(N+1);
    fact[0] = 1;
    REP(i,N) {
        fact[i+1] = fact[i] * (i+1) % MOD;
        fact[i+1] %= MOD;
    }
    invfact[N] = modpow(fact[N],MOD-2);
    REPR(i,N) {
        invfact[i] = invfact[i+1] * (i+1) % MOD;
        invfact[i] %= MOD;
    }
}

void solve(int N, int M, int K) {
    VI fact, invfact;
    prepare_comb(N-1,fact,invfact);
    mint ans = 0;
    REP(i,K+1) {
        ans += M * modpow(M-1, N-i-1) % MOD * fact[N-1] % MOD * invfact[i] % MOD * invfact[N-1-i] % MOD;
    }
    pa;
}

/*
cd ~/Desktop/Programming/AtCoder/contest/abc167/abc167_e && sh test.sh
cd ~/Desktop/Programming/AtCoder/contest/abc167/abc167_e && sh etest.sh
cd ~/Desktop/Programming/AtCoder/contest/abc167/abc167_e && sh submit.sh
*/


Measured memory_bytes: 6332