import math
A,B,C = map(float,input().split())
D = (B**2)-(4*A*C)
if(D <0 or A==0):
print("Impossivel calcular")
else:
D=math.sqrt(D)
R1 = (-B+D)/(2*A)
R2 = (-B-D)/(2*A)
print(f'R1 = {R1:0.5f}\nR2 = {R2:0.5f}')X,Y=list(map(int,input().split()))
if(X == 1):
price = (float) (4.00 * Y)
elif(X == 2):
price = (float) (4.50 * Y)
elif(X == 3):
price = (float) (5.00 * Y)
elif (X == 4):
price = (float) (2.00 * Y);
elif (X == 5):
price = (float) (1.50 * Y)
print(f"Total: R$ {price:.2f}")X,Y = map(int,input().split())
Item = {1:4.0,2:4.5,3:5.0,4:2.0,5:1.5}
X = float(Item[X])*Y
print(f"Total: R$ {X:.2f}")