/*#include <iostream>
using namespace std;
int main(){
     setlocale(LC_ALL, "Russian");
     int n;
     int fact = 1;
     cout << "Введите факториал: " ;
     cin >> n;
     for(int i = 1; i <=n; ++i){
        fact *= i;
     }
     cout << "Factorial = " <<fact ;
return 0;
}*/
#include <iostream>

using namespace std;

int main() {

   double A;

   int S{0}, counter{1};

   cout << "Enter number: ";

   cin >> A;


   do

   {

       S += counter;

       counter++;

   } while (A > S);

   cout << S << '\n';

   counter = 1;

   S = 0;




   while (A > S)

   {

       S += counter;

       counter++;

   }

   cout << S << '\n';

}