# Complex numbers

a = 1 + 1j
print a*a

import math
# print math.exp(a)
import cmath
print cmath.exp(a)
print math.exp(1) * math.cos(1)

# Conditional statements.
# c = input("Complex number : ")
c = 1
c = complex(c)
print c
if c.imag == 0 :
	if c.real >= 0 :
		real_root = math.sqrt(c.real)
		imag_root = 0
	else :
		real_root = 0
		imag_root = math.sqrt(-c.real)
else : 
	root = cmath.sqrt(c)
	real_root = root.real
	imag_root = root.imag
	
print "Square root of the number is %g + %gj." % (real_root, imag_root)

#f = input("Enter a real no. : ")
f= 0
if f < 0 :
	f = -f
print f

# lists : see the other file