题目：

一只小羊跳过了栅栏，两只小样跳过了栅栏，一坨小羊跳过了栅栏…

tn c0afsiwal kes,hwit1r  g,npt  ttessfu}ua u  hmqik e {m,  n huiouosarwCniibecesnren.

看了题目描述，应该是栅栏加密，直接上代码：

result = {0:'',1:'',2:'',3:'',4:'',5:'',6:'',7:'',8:'',9:'',10:'',11:'',12:'',13:'',14:'',15:'',16:'',17:''};
b = 17;
s = "tn c0afsiwal kes,hwit1r  g,npt  ttessfu}ua u  hmqik e {m,  n huiouosarwCniibecesnren."
for i in range(len(s)):
    a = i%b;
    result.update({a:result[a]+s[i]});
for i in range(b):
    print result[i];

最后输出结果：

the a

nwser

is w

ctf{C

01umn

ar},i

f u i

s a b

ig ne

w,u c

an he

lp us

thin

k mor

e que

stion

,tks.