a,b,c = input('請輸入a b c值').split()
a = int(a)
b = int(b)
c = int(c)
D= (b*b-4*a*c)
if (D< 0):
print ('無實數解')
elif (D==0):
{
aa = (-1*b)/(2*a)
print ('唯一解 'aa)
}
elif (D> 0):
{
bb= (-1*b+S)/(2*a)
cc= (-1*b-S)/(2*a)
print ('兩解 '+bb+','+cc)
}
YSxiLGMgPSBpbnB1dCgn6KuL6Ly45YWlYSBiIGPlgLwnKS5zcGxpdCgpCmEgPSBpbnQoYSkKYiA9IGludChiKQpjID0gaW50KGMpCiAKRD0gKGIqYi00KmEqYykKUz1wb3coRCwgMC41KQppZiAoRDwgMCk6CnByaW50ICgn54Sh5a+m5pW46KejJykKZWxpZiAoRD09MCk6CnsKYWEgPSAoLTEqYikvKDIqYSkKcHJpbnQgKCfllK/kuIDop6MgJ2FhKQogCn0KZWxpZiAoRD4gMCk6CnsKYmI9ICgtMSpiK1MpLygyKmEpCmNjPSAoLTEqYi1TKS8oMiphKQpwcmludCAoJ+WFqeinoyAnK2JiKycsJytjYykKfQ==