from math import exp, log
import sys

fval = float(sys.argv[1])
loghalf = log(.5)
if fval < 10: #iff it's < 10, it's an exp, else %.
    power = fval
    percent =  exp(loghalf/power)*100
else:
    percent = fval
    power = loghalf/log(percent/100.)
print("power %4.2f percent %5.3f"  % (power, percent))