#!/usr/bin/python3

# from secretkey import secret_func

from math import *

def f(x):
    # return -(127 * (math.log(3 * math.cos(x / 2) - 2 * math.sin(x / 2)) - log(3 * math.sin(x / 2) + 2 * math.cos(x / 2)))) / math.pi
    return -127 * log(-tan(x / 2 - atan2(3, 2))) / pi

def s(f, x):
    return (f(x + 0.001) - f(x)) / 0.001

def encrypt(f, a, m):
    y0 = f(a)
    y1 = f(m)
    s0 = s(f, a)
    s1 = s(f, m)
    if s0 == s1: return "NULL"
    x = (y1-y0 + s0*a - s1*m)/(s0-s1)
    return (x, s1*(x-m) + y1)

a = -9/4 * math.pi

# l = input("What is the message? ")
# for c in map(ord, l):
#     print(encrypt(secret_func, a, c))

print(f(a))