凯撒密码 信计一班罗逸凡

x = input()
for i in range(0,len(x)):
if x[i] == ' ':
print(' ',end="")
elif x[i] in ['x','y','z']:
print(chr(ord(x[i]) - 23),end="")
else :
print(chr(ord(x[i]) + 3),end="")

 

 

 

学号：37