Kostrub2

import math

p = 50
po = 0
while True:
    print('N:')
    n = int(input())
    for k in range(n + 1):
        po += (p ** k) / (math.factorial(k))
    po = po ** (-1)
    print('p_o = ' + str(po))
    p_otk = po * ((p ** n) / (math.factorial(n)))
    print('p_otk = ' + str(p_otk))