#include <iostream>
using namespace std;


long long getMin(long long n) {
  long long min = (n / 7 ) * 2;
  long long saturday = n % 7;
  if (saturday == 6) min++;
  return min;
}


long long getMax(long long n) {
  long long max = 2 + (n / 7) * 2;

  if (n % 7 == 0)
    max -= 2;
  else if (n % 7 == 1)
    max -= 1;

  return max;

}
int main(){
  long long n;
  cin>>n;
cout << getMin(n) << " " << getMax(n);
}