// #pragma GCC target("avx2")
#pragma GCC optimize("O3")
// #pragma GCC optimize("unroll-loops")
#include<bits/stdc++.h>
#include<atcoder/modint>
#include<atcoder/convolution>
using namespace std;

using P = pair<int, int>;

using mint = atcoder::modint998244353;



int main() {
    cin.tie(0);
    ios::sync_with_stdio(0);
    int n;
    long long b, c;
    cin >> n >> b >> c;
    vector<mint> binom(n + 1);
    binom[0] = 1;
    for (int i = 0; i < n; ++i) {
        binom[i + 1] = binom[i] * (n - i) / (i + 1);
    }
    vector<vector<mint>> rbn2(2);
    for (int i = 0; i < (int)binom.size(); ++i) {
        rbn2[i % 2].push_back(binom[i]);
    }
    reverse(rbn2[0].begin(), rbn2[0].end());
    reverse(rbn2[1].begin(), rbn2[1].end());


    vector<mint> dp(1);
    dp[0] = 1;
    for (int k = 0; k < 61; ++k) {
        vector<vector<mint>> dp2(2);
        for (int i = 0; i < (int)dp.size(); ++i) {
            dp2[i % 2].push_back(dp[i]);
        }
        int bk = (b >> k) & 1;
        int ck = (c >> k) & 1;
        dp = atcoder::convolution(dp2[bk ^ ck], rbn2[ck]);

        if (bk == 0 && ck == 1) {
            dp.insert(dp.begin(), mint(0));
        }
    }
    if (dp.empty()) {
        cout << 0 << '\n';
    }
    else {
        cout << dp[0].val() << '\n';
    }
    return 0;
}