MOD = 998244353
N,M,K = map(int,input().split())
dp = [[0 for _ in range((1<<N))] for _ in range(M+1)]
for s in range(1<<N):
    for t in range(1<<N):
        if bin(s&t).count("1")<K:continue
        dp[2][s] += 1
for m in range(3,M+1):
    for s in range(1<<N):
        cnt = bin(s).count("1")
        if cnt<K:continue
        for t in range(1<<N):
            if bin(s&t).count("1")<K:continue
            dp[m][s] = (dp[m][s]+dp[m-1][t])%MOD
ans = 0
for s in range(1<<N):
    cnt = bin(s).count("1")
    if cnt<K:continue
    ans = (ans+dp[M][s])%MOD
print(ans)