125 прак

import math

#h = float(input())
#print('sin a = ', h/1.2, '+', math.sqrt(0.125**2 * (1/1.2) ** 2 + 0.005**2 * (h/1.2) ** 2))
while(1):
    t = float(input())
    da = math.sqrt(0.005/(2*t**2) ** 2 + (0.9 * 0.002 / t ** 3) ** 2)
    dv = math.sqrt((0.005/t) ** 2 + (0.9 * 0.002 /t**2) ** 2)
    print('a = ', round(0.9/(2 * t**2), 4), ' + ', round((da), 4))
    print('v = ', round(0.9/t, 3), ' + ', round(dv, 3))


da = math.sqrt(0.005/(2*t**2) ** 2 + (0.9 * 0.002 / t ** 3) ** 2)
dv
print(ds)
##a = input().split()
##sum = 0
##sum2 = 0
##for i in a:
##    sum += float(i)
##print(round(sum/len(a), 5), 'среднее арифметическое')
##for i in a:
##    sum2 += (float(i) - sum/len(a))**2
##delta_x = round(math.sqrt(sum2/((len(a))**2 - len(a))), 5)
##print(delta_x, 'среднеквадратичная ошибка')
##y1 = 3.16
##y2 = 4.47
##dx1 = y1 * delta_x
##dx2 = y2 * delta_x
##print('a1 = 0,9   ', 'dx1 = ', dx1)
##print('a2 = 0,95  ', 'dx2 = ', dx2)