#include <cstdint>
#include <iostream>
using namespace std;

uint64_t factorial(uint n) { return (n ? n * factorial(n - 1) : 1); }

class NumberWithFactorial {
private:
  uint n;
  uint64_t f;

public:
  NumberWithFactorial(uint);
};

NumberWithFactorial::NumberWithFactorial(uint n) {
  this->n = n;
  this->f = factorial(n);
  cout << "Factorial of " << this->n << " is " << this->f << endl;
}

int main() {
  NumberWithFactorial(5);
}