n, m, K = map(int, input().split())
mod = 998244353
dp = [1] * (1 << n)
for i in range(m - 1):
	ndp = [0] * (1 << n)
	for j in range(1 << n):
		for k in range(1 << n):
			# dp[j]→ndp[k]
			if bin(j & k).count('1') >= K:
				ndp[k] += dp[j]
				ndp[k] %= mod
	dp = ndp
print(sum(dp) % mod)