budzsergiy777p0i27m import math as m
c = float(input("c = "))
x = float(input("x = "))

A = m.sqrt( m.fabs( m.log1p(m.fabs(x)) + m.log1p(m.fabs(c)) ) )
B = ( 1 / pow(-1,2.5*c))
C = m.fabs(A+B)

E = ( c * (1/(pow(m.e,2.5*c+x))) )
D = pow(m.atan(m.fabs(c-x)),2)
F = E + D

S = F/C

D = m.log(S,c)

print(D)