MOD = 998244353
n, m, k = map(int, input().split())

facts = [1] * (m + 1)
for i in range(0, m):
    facts[i+1] = facts[i] * (i + 1) % MOD
ifacts = [pow(facts[m], MOD - 2, MOD)] * (m + 1)
for i in range(m, 0, -1):
    ifacts[i-1] = ifacts[i] * i % MOD

def comb(n, k):
    return facts[n] * ifacts[n-k] * ifacts[k] % MOD

ans = 0
for i in range(k + 1):
    ans += (-1) ** i * comb(k, i) * pow(m + k - i, n, MOD)
    ans %= MOD
ans *= comb(m, k)
ans %= MOD
print(ans)