n, m, k = map(int, input().split())
mod = 998244353
dp = [[0] * 2 ** n for _ in range(m)]
dp[0] = [1] * 2 ** n
ls = []
for i in range(2**n):
  if bin(i).count("1") >= k:
    ls.append(i)
for i in range(1, m):
  for j in ls:
    for l in ls:
      if bin(j & l).count("1") < k:
        continue
      dp[i][j] += dp[i-1][l]
    dp[i][j] %= mod
ans = 0
for i in ls:
    ans += dp[-1][i]
print(ans % mod)