import math
a = int(raw_input("Input numbers:"))
b = int(raw_input("Input numbers:"))
c = int(raw_input("Input numbers:"))
d = (b*b) - (4*a*c)
if d > 0:
 x = ((- b + math.sqrt((b*b) - (4*a*c))) // 2*a) * 1
 y = ((- b + math.sqrt((b*b) + (4*a*c))) // 2*a) * 1
 print x, y

import math
a = int(raw_input("Input numbers:"))
b = int(raw_input("Input numbers:"))
c = int(raw_input("Input numbers:"))
d = (b*b) - (4*a*c)
if d > 0:
    x = ((- b + math.sqrt((b*b) - (4*a*c))) // 2*a) * 1
    y = ((- b + math.sqrt((b*b) + (4*a*c))) // 2*a) * 1
    print x, y
else:
    print 'd <= 0'

a = int(raw_input("Input numbers:"))
b = int(raw_input("Input numbers:"))
c = int(raw_input("Input numbers:"))

a = input("Input numbers:")
b = input("Input numbers:")
c = input("Input numbers:")

import math
a = input("Input numbers:")
b = input("Input numbers:")
c = input("Input numbers:")
d = (b*b) - (4*a*c)
if d > 0:
 x = (-b - math.sqrt(d)) / 2*a
 y = (-b + math.sqrt(d)) / 2*a
 print x, y

python test.py 
Input numbers:1
Input numbers:2
Input numbers:-3
-3.0 1.0

else:
 print 'd <= 0'

d <= 0
>>> 

import math
a = int(raw_input("Input numbers:"))
b = int(raw_input("Input numbers:"))
c = int(raw_input("Input numbers:"))
d = (b*b) - (4*a*c)
if d > 0:
      x = ((- b + math.sqrt(d)) // 2*a) * 1
      y = ((- b + math.sqrt(d)) // 2*a) * 1
      print x, y
elif d == 0:
    x = -b // 2*a
    print x
else:
    d = 0
    print "Нет корней"

elif d == 0: