#include <bits/stdc++.h>
using namespace std;

int main()
{
    int N;
    cin >> N;
    int x = 1;
    while (x <= N)
    {
        x <<= 1;
        if (x == N)
        {
            cout << 1 << endl;
            return 0;
        }
    }

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