#include <atcoder/all>
using namespace std;
using namespace atcoder;
using mint = modint998244353;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int N;
    long long B, C;
    cin >> N >> B >> C;

    vector<mint> fact(N + 1), inv(N + 1), dp = {1};
    vector<vector<mint>> coef(2, vector<mint>(N + 1));
    fact[0] = 1;
    for(int i = 1; i <= N; i++) fact[i] = i * fact[i - 1];
    inv[N] = 1 / fact[N];
    for(int i = N; i >= 1; i--) inv[i - 1] = i * inv[i];
    for(int i = 0; i <= N; i++) coef[i & 1][i] = fact[N] * inv[N - i] * inv[i];

    for(int i = 0; i < 60; i++){
        auto tmp = convolution(dp, coef[C >> i & 1]);
        dp.resize((tmp.size() + 1) / 2);
        for(int j = B >> i & 1; j < tmp.size(); j += 2) dp[j >> 1] = tmp[j];
    }
    cout << dp[0].val() << '\n';
}