from math import sqrt
imp=open('import.txt','r')
out=open('outport.txt','w')

line= imp.readline()
spline= line.split()

q=float(spline[0])
r=float(spline[1])
t=float(spline[2])
def quadr(a,b,c):
	d=0
	d=b*b-4*a*c
	if d>0:
		x1=(-b+sqrt(d))/(2*a)
		x2=(-b-sqrt(d))/(2*a)
		return (x1,x2)
	elif d==0:
		x1=-b/(2*a)
		return(x1,)
	else:
		return()
solution=quadr(q,r,t)
outline="error"
print type(solution)
if len(solution) == 0:
	outline="no solution"
	print outline
	out.write(outline)
elif len(solution) == 1:
	outline="1 solution"
	x1=solution[0]
	#outline=' x1=%.5f\n' % (x1,)
	print x1
	print outline
	out.write(outline)
else :
	outline="2 solution"
	x1=solution[0]
	x2=solution[1]
	print x1,x2
	print outline
	out.write(outline)
imp.close()
out.close()