The Caesar Cipher is a simple encryption technique that shifts each letter in the plaintext by a fixed number of positions down or up the alphabet.
For example, with a shift of 3:
- a becomes d.
- b becomes e.
- hello becomes kh∞r.
- z∞ becomes crr.
Write a program that takes as input a string and a shift value, and performs encryption using the Caesar Cipher.
### Input
- The first line contains a string S consisting of lowercase letters and spaces.
- The second line contains an integer k (0≤k≤25), the shift value.
### Output
- Print the encrypted string after shifting each letter in S by k positions.
### Constraints
- 1≤|S|≤1000.
- 0≤k≤25.
### Sample test
marisa3
Output:
pdv–d
