#include <bits/stdc++.h>
using namespace std;
#define int long long
int32_t main(){
    int n;
    cin >> n;
    
    if(n % 2 == 0){
        while(n % 2 == 0) n /= 2;
        if(n == 1){
            cout << 1 << endl;
        }else{
            cout << 3 << endl;
        }
    }else{
        cout << 2 << endl;
    }
    
    return 0;
}