from math import pi,sqrt

G = 6.6743e-11
au = 149597870700
y = 31536000
M = 1.988409870698051e30

r_i = float(input("r (in au): "))
m = float(input("M_sun (1): "))*M

r = r_i*au
print("r= {:.4f}au".format(r/au))

p = 2*pi * sqrt(r**3/(G*m))
print("p={:.4f}yr".format(p/y))

v = 2*pi * r/p
print("v={:.4f}km/s".format(1e-3*v))