#include <iostream>
#include <fstream>
///Raspunsul este n!*(2^(n^2))
using namespace std;

ifstream f("patrate2.in");
ofstream g("patrate2.out");

struct Huge{
    int a[100000];
};

void makeHuge(Huge &H, unsigned long X) {
  H.a[0] = 0;
  while (X) {
      ++H.a[0];
      H.a[H.a[0]] = X % 10;
      X /= 10;
  }
}

void mult(){
    
}

int main()
{
    int n;
    cin>>n;
    Huge A;
    makeHuge(A,5387563765756);
    /*for(int i=1;i<=A.a[0];i++){
        cout<<A.a[i];
    }*/
    cout<<A.a[0];
    return 0;
}