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

#define ll long long
#define bug(a) cout << #a << " : " << a << endl;

void solve(){
	int n;	cin >> n;
	if ( n == 1 ) {
		cout << 0 << '\n';
		return;
	}
	cout << 2 << '\n';
}	

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);

	int tc = 1, cs = 0;
	//cin >> t;

	while(tc--){
		//cout << "Case # " << ++cs << ": " ;
		solve();
	}

}