#include <bits/stdc++.h>
#include <atcoder/all>
using mint = atcoder::static_modint<998244353>;
//using mint = atcoder::static_modint<1000000007>;
using namespace std;
using namespace atcoder;
using ld = long double;
using ll = long long;
#define mp(a,b) make_pair(a,b)
#define rep(i,s,n) for(int i=s; i<n; i++)
const vector<int> dx{1,0,-1,0},dy{0,1,0,-1};

int main(){
    ll h,w,m;
    cin >> h >> w >> m;
    mint ans=1;
    if(h+w-1>m)ans=0;
    else{
        rep(i,0,h+w-1)ans*=m-i,ans/=i+1;
        ans/=mint(m).pow(h+w-1);
        //cout << ans.val() << "\n";
        rep(i,0,h-1)ans*=h+w-2-i,ans/=i+1;
        ans*=mint(m).pow(h*w);
    }
    cout << ans.val();
}