N, M, K = map(int, input().split())

MOD = 998244353
DP = [1]*(1<<N)

for _ in range(M-1):
    ndp = [0]*(1<<N)

    for i in range(1<<N):
        for j in range(1<<N):
            if (i&j).bit_count() >= K:
                ndp[j] += DP[i]
                ndp[j] %= MOD

    DP = ndp

print(sum(DP)%MOD)