#include <stdio.h>
int main()
{
int i, n, m;
double s = 0, h = 0;
scanf_s("%d %d", &n, &m);
if (m == 1) {
s = n; h = n * 1.00 / 4;
printf("%.2lf\n", s);
printf("%.2lf", h);
}
else if (m > 1) {
h = n;
s = n;
for (i = 2; i <= m; i++) {
//h = n * 1.00 / 4;
//s = n * 1.00;
h = h / 4 * 1.00;
s += 2 * h;
}
h = h / 4;
printf("%.2lf\n", s);
printf("%.2lf", h);
}
return 0;
}