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

dp = [[0]*(1<<N) for _ in range(M)]
MOD = 998244353
for i in range(1<<N):
    dp[0][i] = 1

def func(a, b):
    cnt = 0
    for i in range(N):
        if a & 1<<i and b & 1<<i:
            cnt += 1
    return cnt

for i in range(M-1):
    for j in range(1<<N):
        for k in range(1<<N):
            if func(j, k) >= K:
                dp[i+1][k] += dp[i][j]
                dp[i+1][k] %= MOD

print(sum(dp[-1]) % MOD)