Encode and Decode Strings

Design a reversible string codec using the format `length#value` for each string. Input format: - First line: n - Next n lines: one raw string per line. Strings may contain spaces and `#`, but not newlines. Encode the list, decode the encoded payload, then print the encoded payload on the first line and the decoded strings on the following n lines.

1 <= n <= 10^4
0 <= string length <= 10^4
Total input characters <= 2 * 10^5

3
lint
code
love

4#lint4#code4#love
lint
code
love

2
hello world
abc#123

11#hello world7#abc#123
hello world
abc#123