from math import sqrt

a = int(input("a : "))
b = int(input("b : "))
c = int(input("c : "))

delta = (b ** 2) - (4 * a * c)

v1 = (-1 * b - sqrt(delta)) / (2 * a)
v2 = (-1 * b + sqrt(delta)) / (2 * a)

print("v1 : ", v1)
print("v2 : ", v2)