def full(shape, fill_value):
   if len(shape) == 1: return [fill_value] * shape[0]
   return [full(shape[1:], fill_value) for _ in range(shape[0])]


def vector(seq: list[int]|tuple[int, ...]):
   return [[x] for x in seq]


def matmul(A, B, MOD):
   X = len(A)
   Y = len(A[0])
   assert Y == len(B)
   Z = len(B[0])
   tB = [[B[j][k] for j in range(Y)] for k in range(Z)]
   res = []
   for i in range(X):
      nrow = [0]*Z
      Ai = A[i]
      for k in range(Z):
         tBk = tB[k]
         for j in range(Y):
            term = Ai[j] * tBk[j]
            nrow[k] += term
            nrow[k] %= MOD
      res.append(nrow)
   return res


def matpow(base, exp, MOD):
   assert len(base) == len(base[0])
   N = len(base)
   res = [[int(i == j) for j in range(N)] for i in range(N)]
   while exp:
      if exp&1:
         res = matmul(res, base, MOD)
      base = matmul(base, base, MOD)
      exp >>= 1
   return res

MOD = 998_244_353
N, M, K = map(int, input().split())

mat = full((1<<N, 1<<N), 0)
for S in range(1<<N):
   for nS in range(1<<N):
      if int.bit_count(S&nS) < K:
         continue
      mat[nS][S] += 1

V = vector([0]*((1<<N) - 1) + [1])
mat = matpow(mat, M, MOD)
V = matmul(mat, V, MOD)

ans = sum(row[0] for row in V)
ans %= MOD

print(ans)