题解 | #单词倒排#

import sys
a = input()
for n in a:
    if n.isalpha() == False:
        a = a.replace(n,' ')
a = a.split()

for n in range(round(len(a)/2)):
    a[n],a[len(a)-n-1] = a[len(a)-n-1],a[n]
for i in a:
    print(i,end = ' ')