#include<iostream>
#include<set>
#include<algorithm>
#include<vector>
#include<string>
#include<set>
#include<map>
#include<numeric>
#include<queue>
#include<cmath>
using namespace std;
typedef long long ll;
const ll INF=1LL<<60;
typedef pair<int,int> P;
typedef pair<int,P> PP;
const ll MOD=998244353;
const double PI=acos(-1);

int main(){
    int N;
    cin>>N;

    int n=N;
    while(n%2==0){
        n/=2;
    }

    int ans=4;
    if(n==1){
        //nが2のべき
        ans=1;
    }else{
        //nが2のべきでない
        if(N%2==1){
            ans=2;
        }else{
            //N%2==0
            ans=3;
        }
    }
    

    cout<<ans<<endl;
}