#include <math.h>
#include <stdio.h>
#include <string.h>

int main(int argc, char *argv[])
{
	double a, b, g, t;
	double x, y, i;

	if (argc < 3)
		return 1;

	sscanf(argv[1], "%lf", &a);
	sscanf(argv[2], "%lf", &g);
	b = a * M_SQRT1_2;
	i = M_PI_2 / 1000.0;

	/* Summary */
	fprintf(stderr, "a=%f b=%f g=%f\n", a, b, g);


	for (t = 0; t <= M_PI_2; t += i) {
		x = a * cos(t);
		y = b * sin(t);
		printf("%.8f %.8f\n", x, y);
	}
	return 0;
}