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Original file line number Diff line number Diff line change
@@ -0,0 +1,26 @@
'''
5.给定一个单词,请使用凯撒密码将这个单词加密。
  凯撒密码是一种替换加密的技术,单词中的所有字母都在字母表上向后偏移3位后被替换成密文。即a变为d,b变为e,...,w变为z,x变为a,y变为b,z变为c。
  例如,lanqiao会变成odqtldr。
输入格式
  输入一行,包含一个单词,单词中只包含小写英文字母。
输出格式
  输出一行,表示加密后的密文。
样例输入
lanqiao
样例输出
odqtldr

'''

a=input()
t=''
for i in a:
if('a'<=i<='z'):
t+=chr(ord('a')+((ord(i)-ord('a'))+3)%26)

else:
t+=i

print(t)