#include <bits/stdc++.h> 
using namespace std;
using ll =long long;
#define all(v) v.begin(),v.end()
 #define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>=b;i--)

int main() {
    ll N;cin>>N;
    for(ll i=0;i<=40;i++) {
        if((1LL<<i)==N) {
            cout<<1<<endl;
            return 0;
        }
    }

    if(N%2!=0) {
        cout<<2<<endl;
    }
    else cout<<3<<endl;
}