#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using ll = long long;
#define rep(i,n) for(int i=0;i<(int)(n);i++)
using mint = atcoder::modint998244353;

int main(){
	int n;
	cin>>n;
	if(n&1){
		cout<<2<<endl;
		return 0;
	}
	if(__builtin_popcount(n)==1){
		cout<<1<<endl;
	}else{
		cout<<3<<endl;
	}
}