using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Threading;
using static util;

class Program {
    static void Main(string[] args) {
        var sw = new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };
        var solver = new Solver(sw);
        // var t = new Thread(solver.solve, 1 << 26); // 64 MB
        // t.Start();
        // t.Join();
        solver.solve();
        sw.Flush();
    }
}

class Solver {
    StreamWriter sw;
    // Scan sc;
    void Prt(string a) => sw.WriteLine(a);
    void Prt<T>(IEnumerable<T> a) => Prt(string.Join(" ", a));
    void Prt(params object[] a) => Prt(string.Join(" ", a));
    public Solver(StreamWriter sw) {
        this.sw = sw;
        // this.sc = new Scan();
    }

    public void solve() {
        long m = long.Parse(Console.ReadLine());
        Assert(1 <= m && m < 1L << 60);
        long ans = 1;
        for (int i = 0; i < 128; i++)
            ans = ans * 2 % m;

        Prt(ans);
    }
}

static class util {
    public static void Assert(params bool[] conds) {
        foreach (var cond in conds) if (!cond) throw new Exception();
    }
}