#include <stdio.h>

const int Mod = 998244353, half = 499122177;
long long fact[200001], fact_inv[200001];

long long div_mod(long long x, long long y, long long z)
{
	if (x % y == 0) return x / y;
	else return (div_mod((1 + x / y) * y - x, (z % y), y) * z + x) / y;
}

int main()
{
	int N, K, X;
	scanf("%d %d %d", &N, &K, &X);

	int i;
	for (i = 1, fact[0] = 1; i <= N; i++) fact[i] = fact[i-1] * i % Mod;
	for (i = N - 1, fact_inv[N] = div_mod(1, fact[N], Mod); i >= 0; i--) fact_inv[i] = fact_inv[i+1] * (i + 1) % Mod;

	long long ans = (fact[N-K] - 1) * half % Mod, tmp;
	for (i = 1; i < K; i++) {
		tmp = fact[N-i+1] * (N - i) % Mod * half % Mod;
		tmp += Mod - fact[N-i] * (X - 1) % Mod;
		tmp += (X - 1) * fact[N-i] % Mod * (i - 1) % Mod * fact[N-2] % Mod * fact_inv[N-1] % Mod;
		ans += tmp * fact[N-i-1] % Mod * fact_inv[N-i] % Mod;
	}
	ans += fact[N-K] * (X - 1) % Mod;
	ans += Mod - (X - 1) * fact[N-K] % Mod * (K - 1) % Mod * fact[N-2] % Mod * fact_inv[N-1] % Mod;
	printf("%lld\n", ans % Mod * fact[N-1] % Mod);
	fflush(stdout);
	return 0;
}