import sys
input = sys.stdin.readline
from collections import *

N, M, K = map(int, input().split())
ans = 0
MOD = 998244353

if M-K+1>0:
    ans += (M-K+1)*(pow(K, 2*N, MOD)-pow(K-1, 2*N, MOD))%MOD

if M-K+1<M:
    ans += pow(K-1, 2*N, MOD)
    ans %= MOD

print(ans)