#include<iostream>
#include<algorithm>
#include <vector>
#include<cmath>
using namespace std;
int main() {
	const string A = "285714";
	int N;
	cin >> N;
	if (N % 6 != 0) {
		cout << A.at(N % 6 - 1) << endl;
	}
	else if (N % 6 == 0) {
		cout << 4 << endl;
	}
}