a,b,c=map(int,input().split())
D=b**2-4*a*c
if D>0:
    print(min((-b+D**0.5)/2/a,(-b-D**0.5)/2/a),max((-b+D**0.5)/2/a,(-b-D**0.5)/2/a))
elif D==0:
    print(-b/2/a)
else:
    print('imaginary')