package main

import . "fmt"
import . "math/bits"

func main() {
	var n, m, k int
	Scan(&n,&m,&k)
	const MOD = 998244353
	b := 1 << n
	dp := make([][]int, m)
	for i := range dp {
		dp[i] = make([]int, b)
	}
	for i := range dp[0] {
		dp[0][i] = 1
	}
	for i, nx := range dp[1:] {
		for x, a := range dp[i] {
			for y := range nx {
				z := x&y
				if OnesCount(uint(z)) >= k {
					nx[y] = (nx[y] + a) % MOD
				}
			}
		}
	}
	var ans int
	for _, v := range dp[m-1] {
		ans = (ans+v)%MOD
	}
	Println(ans)
}