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

using ll = long long;
using P = pair<ll, ll>;
const ll INF = (1LL << 61);
ll mod = (ll)1e9 + 7;

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	ll N; cin >> N;
	if (N == 2)cout << "INF" << endl;
	else if (N == 3 || N == 4)cout << 6 << endl;
	else if (N == 5 || N == 6)cout << 4 << endl;
	else cout << 2 << endl;
	return 0;
}