PROGRAMMING:*Message Ring encryption

Arrange 26 English letters in a circle clockwise. The key is an integer.
Encryption method:
-If the key is $$key / GEQ 0 $$, the ciphertext letter is obtained by taking steps of $$| key $$clockwise from the plaintext letter;
-If the key is $$key / LT 0 $$, the ciphertext letter will be obtained by going in a counter clockwise direction from the plaintext letter.
Please write an encryption program, input the key (any integer) and plaintext message (including large and small letters, numbers and other symbols), encrypt the large and small letters in the message, and output the ciphertext message.
####Input format
>Key (any integer)
>Plaintext message (end with carriage return)
####Output format
>Ciphertext message (end with carriage return)
####Input sample 1
```in
two
I love you!
```
####Output sample 1
```out
K nqxg aqw!
```
####Input sample 2
```in
-2
I have 10 bags.
```
####Output sample 2
```out
G fytc 10 zyeq.
```







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