A temporary solution for problem 294.

quera-294.py

#https://quera.org/problemset/294
#This solution is failed in test case 8.

import math

# Read coefficients a, b, and c
a = float(input())
b = float(input())
c = float(input())

# Check if it's not a quadratic equation
if a == 0:
    if b == 0:
        if c == 0:
            print("IMPOSSIBLE")  # Infinite solutions scenario, not an equation technically
        else:
            print("IMPOSSIBLE")  # No valid equation or solution
    else:
        # Linear equation: bx + c = 0 => x = -c / b
        x = -c / b
        print(f"{x:.3f}")
else:
    # Calculate the discriminant
    discriminant = b**2 - 4*a*c

    if discriminant > 0:
        # Two real solutions
        x1 = (-b - math.sqrt(discriminant)) / (2 * a)
        x2 = (-b + math.sqrt(discriminant)) / (2 * a)
        # Print in ascending order
        print(f"{min(x1, x2):.3f}")
        print(f"{max(x1, x2):.3f}")
    elif discriminant == 0:
        # One real solution
        x = -b / (2 * a)
        print(f"{x:.3f}")
    else:
        # No real solutions
        print("IMPOSSIBLE")