数列和+水仙花数+句子翻转

1、数列和

import math
m,n = map(int, raw_input().split())
answer = []
for i in range(n):
    answer.append(m)
    m = math.sqrt(m)
print ‘%.2f‘ % sum(answer)

2、水仙花数

m,n = map(int,raw_input().split())
answer = []
def isFlower(x):
    return x == sum([int(i)**3 for i in str(x)])
for i in range(m,n+1):
    if isFlower(i):
        answer.append(str(i))
if len(answer) != 0:
    print " ".join(answer)
else:
    print ‘no‘

3、句子反转

import sys
print(" ".join(raw_input().strip().split(" ")[::-1]))