#include <bits/stdc++.h>
using namespace std;
template <class X>
void input(vector<X>& a, int N) {
  X temp;
  for (long long int i = 0; i < N; i++) {
    cin >> temp;
    a.push_back(temp);
  }
}
void solve() {
  int n;
  cin >> n;
  int ans = (n / 7) * 2;
  n %= 7;
  if (n == 6) {
    cout << ans + 1 << " " << ans + ((2) < (n) ? (2) : (n));
    return;
  }
  cout << ans << " " << ans + ((2) < (n) ? (2) : (n));
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int t;
  t = 1;
  while (t--) {
    solve();
  }
  return 0;
}
