# Enter a code
L = [95.5, 85, 59, 66, 72]
a=0
zh=0
n=len(L)
for i in range(n):
sw=False
for su in range(0,n-i-1):
T=0
if L[su+1]>=L[su]:
T=L[su+1]
L[su+1]=L[su]
L[su]=T
sw=True
if not sw:
break
print(L[0:3])
names = ['Alice', 'Bob', 'Candy', 'David', 'Ellena']
name_set = set(names)
extend_set = set([])
for i in name_set:
extend_set.add(i.lower())
name = 'Bob'
new_name = name.lower()
if new_name in extend_set:
print('{} is in the class'.format(name))
else:
print("{} isn't in the class".format(name))
