/* -*- coding: utf-8 -*-
 *
 * 744.cc:  No.744 循環小数N桁目 Easy - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

const int N = 6;
const char ds[N + 1] = "285714";

/* typedef */

/* global variables */

/* subroutines */

/* main */

int main() {
  int n;
  scanf("%d", &n);
  n--;

  printf("%c\n", ds[n % N]);
  return 0;
}