#include <iostream>

using lint = long long;

void solve() {
    lint m;
    std::cin >> m;

    lint ans = 1;
    for (int i = 0; i < 128; ++i) {
        ans = (ans * 2) % m;
    }
    std::cout << ans << std::endl;
}

int main() {
    std::cin.tie(nullptr);
    std::cout.tie(nullptr);
    std::ios::sync_with_stdio(false);

    solve();

    return 0;
}