#include <iostream>
#include <atcoder/modint>

using namespace std;
using namespace atcoder;
using mint = modint998244353;
mint dp[310][310],S[310][310],f[310];
mint pw(mint a,int x){
    mint ret = 1;
    while(x){
        if(x&1) ret *= a;
        a *= a; x /= 2;
    }
    return ret;
}

int main(){
    int i,j,n,m,k; cin >> n >> m >> k;
    dp[0][0] = 1;
    for(i=1;i<=m + 1;i++){
        for(j=0;j<=m + 1;j++){
            for(int pre=0;pre<j;pre++){
                mint c = pre<k ? pw(j,min(j,k) - pre) : 1;
                dp[i][j] += dp[i - 1][pre]*c;
            }
        }
    }
    f[0] = 1;
    for(i=1;i<=m + 1;i++) f[i] = f[i - 1]*i;
    for(i=0;i<=n;i++) S[i][1] = S[i][i] = 1;
    for(i=1;i<=n;i++){
        for(j=2;j<i;j++) S[i][j] = S[i - 1][j - 1] + j*S[i - 1][j];
    }
    mint ans = 0;
    for(i=1;i<=m;i++){
        // cout << "#empty = " << i << " ";
        // cout << f[m + 1 - i].val() << " " << S[n][m + 1 - i].val() << " " << dp[i][m + 1].val() << endl;
        ans += f[m + 1 - i]*S[n][m + 1 - i]*dp[i][m + 1];
    }
    cout << ans.val() << "\n";
}