#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
#include <atcoder/dsu>
#include <atcoder/segtree>
using namespace atcoder;
using namespace std;
typedef long long ll;
#define rep(i,a,b) for(int i=a;i<b;i++)
using vi = vector<int>; 
using vvi = vector<vi>; 
using li =vector<ll>;
using lli=vector<li>;
using si =vector<char>;
using ssi =vector<si>;
const long long INF = 1e18;
const long long MOD=1e9+7;
int main() { ll n;cin>>n;
li vec(1000);
vec[1]=1;vec[2]=1;
if(n==1){cout<<1;return 0;}
rep(i,3,403){
	vec[i]=vec[i-1]+vec[i-2];
	vec[i]%=n;
	if(vec[i]==0){cout<<i;return 0;}
}
	
}