#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define rep(i, n) for(int i=0;i<(n);++i)
#define rep1(i, n) for(int i=1;i<=(n);i++)
#define ll long long
using mint = modint998244353;
using P = pair<ll,ll>;
using lb = long double;
using T = tuple<ll, ll, ll>;
#ifdef LOCAL
#  include <debug_print.hpp>
#  define dbg(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#  define dbg(...) (static_cast<void>(0))
#endif

int main()
{
    int n;
    cin >> n;
    vector<int> a;
    if(n==1) {
        cout << 1 << endl;
        return 0;
    }
    a.push_back(1);
    a.push_back(1);
    while(true) {
        a.push_back(a.back()+a[a.size()-2]);
        a.back() %= n;
        if(a.back() == 0) {
            cout << a.size() << endl;
            return 0;
        }
    }
    return 0;
}