#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll=long long;
using ld=long double;
ld pie=3.141592653589793;
ll inf=155550555555555;
ll mod=1000000007;
int main(){
    ll n;
    cin >> n;
    vector<ll>two(50,1);
    for (ll i = 1; i < 50; i++)
    {
        two[i]=two[i-1]*2;
    }
    bool ok=false;
    for (ll i = 0; i < 50; i++)
    {
        if (two[i]==n)
        {
            ok=true;
            break;
        }
    }
    if (ok)
    {
        cout << 1 << endl;
    }else if (n%2)
    {
        cout << 2 << endl;
    }else{
        cout << 3 << endl;
    }
    
    
}