#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> l_l;
typedef pair<int, int> i_i;
template<class T>
inline bool chmax(T &a, T b) {
    if(a < b) {
        a = b;
        return true;
    }
    return false;
}

template<class T>
inline bool chmin(T &a, T b) {
    if(a > b) {
        a = b;
        return true;
    }
    return false;
}

#define EPS (1e-7)
#define INF (1e9)
#define PI (acos(-1))
//const ll mod = 1000000007;
__int128_t M;
ll _M;

__int128_t beki(__int128_t a, __int128_t b) {
    if(b == 0) return 1;
    auto ret = beki(a, b / 2);
    ret = ret * ret % M;
    if(b & (__int128_t)1) ret = ret * a % M;
    return ret;
}

int main() {
    //cout.precision(10);
    cin.tie(0);
    ios::sync_with_stdio(false);
    cin >> _M;
    M = _M;
    __int128_t a = beki(2, 128);
    ll ans = a;
    cout << ans << endl;
    return 0;
}