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


int main()
{
	double suma=0, n;
	int i=1;
	cout << "prog" << endl;
	cin >> n;
	while ((1 / (pow(i, 2)+1))>=n)
	{
		suma += (1 / (pow(i, 2) + 1));
			cout << suma << endl;
			i++;
			if (i == 10)break;
	}
	system("pause");

}