#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, mi, mx;
  cin >> n;
  if (n == 1) {
    mi = 0;
    mx = 1;
  }
  if (n > 1 && n <= 5) {
    mi = 0;
    mx = 2;
  } else if (n % 7 == 0) {
    mx = (n / 7) * 2;
    mi = mx;
  } else if (n == 6) {
    mi = 1;
    mx = 2;
  } else {
    mi = (n / 7) * 2;
    if (n % 7 == 6) {
      mi = mi + 1;
    }
    if (n % 7 == 1) {
      mx = (n / 7) * 2 + 1;
    } else {
      mx = (n / 7) * 2 + 2;
    }
  }
  cout << mi << " " << mx << endl;
  return 0;
}
