#include <bits/stdc++.h>
#include <atcoder/all>
 
#define elif else if
#define ll long long
#define vll vector<long long>
#define vec vector
#define embk emplace_back
#define rep(i, n) for (int i = 0; i < n; i++)
#define rep3(i, n, k) for (int i = k; i < n; i++)
#define all(a) a.begin(), a.end()
 
using namespace std;
using namespace atcoder;
const ll INF = 1LL << 60;
const ll mod = 998244353;

int main() {
  ll n; cin >> n;
  rep3(i, 31, 1) {
    if (n == (1LL << i)) {
      cout << 1 << endl;
      return 0;
    }
  }
  if (n % 2 == 0) cout << 3 << endl;
  else cout << 2 << endl;
  
}