#include <bits/stdc++.h>
using namespace std;

void fast_io() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
}

#include <atcoder/modint>
using mint = atcoder::modint998244353;
int main() {
	fast_io();
	int h, w, m;
	cin >> h >> w >> m;
	mint mpow[h * w + 1];
	mpow[0] = 1;
	for (int i = 1; i <= h * w; i++) {
		mpow[i] = mpow[i - 1] * m;
	}
	// binom(m, i)
	mint comb[h * w + 1];
	comb[0] = 1;
	for (int i = 1; i <= h * w; i++) {
		comb[i] = comb[i - 1] * (m - i + 1) / i;
	}
	mint others = mint(m).pow(h * w - h - w + 1);

	vector<vector<mint>> dp(h, vector<mint>(w));

	dp[0][0] = 1;
	for (int i = 0; i < h; i++) {
		for (int j = 0; j < w; j++) {
			if (i < h - 1) {
				dp[i + 1][j] += dp[i][j];
			}
			if (j < w - 1) {
				dp[i][j + 1] += dp[i][j];
			}
		}
	}

	mint ans = others * dp[h - 1][w - 1] * comb[h + w - 1];
	cout << ans.val() << endl;
}