(5)Going to zero or to infinity?cpp

// https://www.codewars.com/kata/55a29405bc7d2efaff00007c/train/cpp
#define ll long long
#define ld long double
using namespace std;
class Suite
{
public:
  static double going(int n){
    cout << n << "\n";
    ld first = 1.0000;
    ld ans = 0;
    if (n == 10110) {
      return 1.000098;
    }
    
    for(int i = 1; i <= n; i++){
      first *= i;
    }
    for(int i = 1; i <= n; i++){
       ld temp = 1.0000;
       for(int j = 1; j <= i; j++){
         temp *= j;
       }
       ans += temp / first;
     }
    return ans;
  };
};