比较三个值中最大的值

# coding:utf-8

a=int(raw_input("请输入数字："))
b=int(raw_input("请输入数字："))
c=int(raw_input("请输入数字："))
if a>b:
   if(a>c):
      print("最大值是a",a)
   else:
      print("最大值是c", c)
else:
   if (b > c):
      print("最大值是b", b)
   else:
      print("最大值是c", c)