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

int main ()
{
	const double factor {pow(2.0, 1.0/12)};

	cout << "Each pipe is " << fixed << setprecision(3) << factor << " times as long as the previous one. \n\n";

	double length {100.0};
	for (int pipe {0}; pipe <= 12; ++pipe) {
		cout << setw(2) << pipe 
			<<" " << fixed << setprecision(3) << length << "\n";
		length *= factor; 
	}
	return EXIT_SUCCESS;
}