# 凯撒加密\
# # a-c 对应着  65-90   97-122
# print(ord("A"))
# print(ord("b"))
# print(ord("c"))
# print(ord("z"))
# # 把数字穿换成字母
# print(chr(121))
# print(chr(120))
# print(chr(119))
# print(chr(118))


# a  ===> c
# happy ==>
player = input("你的加密字符串（英文）")
s = len(player)
# 加密只能在英文间加密，
# # a-c 对应着  65-90   97-122
for x in range(s):
    # print(player[x], end="=")
    number = ord(player[x])
    # 加密
    number = number-2
    if 97 > number > 90:
        num = 97 - number
        number = 90-num
    elif number < 65:
        num = 65 - number
        number = 122-num
    english = chr(number)
    print(english, end="")



# 质数  1-1000
# for x in range(2, 100001):
#     for y in range(2, x):
#         if x % y == 0:
#             break
#     else:
#         print(x, end=" ")

# 超级计算机： 计算 ----》 天气、核战争

# 新的数据类型
# a = [1, 2, 3, 4, 5, 6]
# 增、删、改、查
print()
b = (1, 2, 3, 4, 5, 6) # 不能修改
# 增x、删x、改x、查
print(b[2:5])

# 保存qq账号密码
qq = (1, 11,1,1,1,1,1,1,1,11,12,34,5,67)
print(qq.count(1))