#include <atcoder/all>
#include <bits/stdc++.h>

using namespace std;

//#define DISABLE_PRINT

#if defined(ENABLE_PRINT) && !defined(DISABLE_PRINT)

#define P(...) fprintf(stderr, __VA_ARGS__)
#define LP fprintf(stderr, "L: %d\n", __LINE__)

#else

#define P(...) ((void)0)
#define LP ((void)0)

#endif

#define rep(i, n) for (int i = 0; i < (int)(n); ++i)
#define ALL(x) x.begin(), x.end()

using ll = long long;
using ull = unsigned long long;

const int INF = 1100100100;
const ll INFLL = 1100100100100100100;

using mint = atcoder::modint998244353;

template <typename T, int Mod = 1> class Matrix {
public:
    Matrix(int h, int w) : _h(h), _w(w) {
        _data = vector<vector<T>>(h, vector<T>(w));
    }

    vector<T> &operator[](int i) {
        assert(i >= 0 && i < _h);
        return _data[i];
    }

    Matrix operator+(const Matrix &r) const {
        Matrix v(*this);
        v += r;
        return v;
    }

    Matrix &operator+=(const Matrix &r) {
        rep(i, _h) rep(j, _w) {
            _data[i][j] += r._data[i][j];
            _data[i][j] %= Mod;
        }
        return *this;
    }

    Matrix operator-(const Matrix &r) const {
        Matrix v(*this);
        v -= r;
        return v;
    }

    Matrix &operator-=(const Matrix &r) {
        rep(i, _h) rep(j, _w) {
            _data[i][j] -= r._data[i][j];
            _data[i][j] += Mod;
            _data[i][j] %= Mod;
        }
        return *this;
    }

    Matrix operator*(const Matrix &r) {
        assert(_w == r._h);
        Matrix v(_h, r._w);
        rep(i, _h) rep(j, r._w) {
            v._data[i][j] = 0;
            rep(k, _w) {
                auto m = (_data[i][k] * r._data[k][j]) % Mod;
                v._data[i][j] += m;
                v._data[i][j] %= Mod;
            }
        }
        return v;
    }

    Matrix &operator*=(const Matrix &r) {
        assert(_w == _h && _w == r._w && r._w == r._h);

        auto v = (*this) * r;
        *this = v;
        return *this;
    }

    Matrix pow(ll x) {
        P("x: %lld\n", x);
        if (x == 1) {
            return *this;
        }

        auto tx = x / 2;
        auto tm = pow(tx);
        auto v = tm * tm;
        if (x % 2 == 1) {
            v = v * (*this);
        }
        return v;
    }

    void Dump() const {
        rep(i, _h) {
            rep(j, _w) {
                P("%5lld ", _data[i][j]);
            }
            P("\n");
        }
    }

private:
    int _h, _w;
    vector<vector<T>> _data;
};

int main() {
    ll N;
    cin >> N;
    using MT = Matrix<ll, 998244353>;
    if (N == 2) {
        cout << 1 << endl;
        return 0;
    }
    MT m(2, 2);
    m[0][0] = 1;
    m[0][1] = 1;
    m[1][0] = 1;
    m[1][1] = 0;
    m.Dump();
    m = m.pow(N - 2);

    m.Dump();

    MT lm(2, 1);
    lm[0][0] = 2;
    lm[1][0] = 1;
    auto ans = m * lm;
    cout << (ans[0][0] + 998244352) % 998244353 << endl;

    return 0;
}