Бред

#define _USE_MATH_DEFINES
#include <iostream>
#include <string>
#include <map>
#include <set>
#include <algorithm>
#include <vector>
#include <stdio.h>
#include <cmath>
#include <math.h>
#include <queue>
#include <stack>
#include <climits>
#include <deque>
#include <ctime>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef unsigned int ui;

#define mh() make_heap()
#define poph() pop_heap()
#define pushh() push_heap()
#define sor(n) n.begin(), n.end()
#define mp make_pair

int main()
{
    ll n;
    cin >> n;

    int ar[20] = { 0,1,1,2,0,2,1,2,0,1,1,2,0,1,1,2,0,1,1,2 };

    cout << ar[n % 20];
    system("pause");
    return 0;
}