from math import *

def Comb(n,k):
    c=factorial(n)/(factorial(n-k)*factorial(k))
    return c

def Max(p):
    n=150
    S=1
    while S>=1-p:
        S=0
        for i in range(0,150):
            S=S+Comb(n,i)*pow(0.92,i)*pow(0.08,n-i)
        n=n-1
    return n