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

#ifdef _RUTHEN
#include "debug.hpp"
#else
#define show(...) true
#endif

using ll = long long;
#define rep(i, n) for (int i = 0; i < (n); i++)
template <class T> using V = vector<T>;

const int INF = 1 << 30;
const int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int X;
    cin >> X;
    V<int> dp(20, 1 << 30);
    dp[0] = 0;
    int cur = 0, d = 0;
    const int dd[7] = {2, 2, -1, -1, 2, -1, -1};
    rep(i, 5) {
        rep(j, 7) {
            cur += dd[j];
            d += abs(dd[j]);
            dp[cur] = min(dp[cur], d);
        }
    }
    cout << dp[X] << '\n';
    return 0;
}