using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).ToArray();
    static string[] SList(long n) => Enumerable.Repeat(0, (int)n).Select(_ => ReadLine()).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var n = NN;
        if (n == 1)
        {
            WriteLine(1);
            return;
        }
        var p2 = 0;
        var p1 = 1;
        var ans = 2;
        while (true)
        {
            if ((p2 + p1) % n == 0)
            {
                WriteLine(ans);
                return;
            }
            (p2, p1) = (p1, (p2 + p1) % n);
            ++ans;
        }
    }
}