#include <iostream>
#include <vector>
#include <set>
#include <queue>
#include <algorithm>
#include <string>
#include <fstream>
#include <cctype>
#include <iomanip>
#include <cmath>
#include <cstring>
#include <map>
#include <bitset>
#include <stack>
/*  //c++11
#include <unordered_map>
#include <unordered_set>
#include <tuple>
*/

using namespace std;

//ifstream fin("1.in");
//ofstream fout("1.out");

int solve(int n)
{
    n%=4;
    if(n == 0)
        return 0;
    if(n == 1)
        return 1;
    if(n == 2)
        return 1;
    return 0;
}

int main()
{
    //freopen("1.in","r",stdin);
    //freopen("1.out","w",stdout);
    int n;
    cin>>n;
    cout<<15+solve(n);


    return 0;
}


//FILE!!!