N,M,K = map(int,input().split())
N *= 2
P = 998244353

import sys
if M < K:
    print(pow(M,N,P))
    exit()

ans = 0
if K == 1:
    print(M%P)
    exit()
if K == 2:
    ans = (M - 1) * pow(2,N - 2,P) + M
    print(ans%P)
    exit()

inv = pow(K-2,P-2,P)
tmp = pow(K - 1,N,P) - 1
tmp = pow(K,N,P)-pow(K-1,N,P)
ans = tmp * (M - K) % P

t = pow(K,N,P)

ans += t
print(ans%P)