Here's the translation of the given Chinese text to English while preserving all markdown formatting and code blocks:

## Description

Input two strings and verify whether one string is a substring of the other.

## Input Format

Input two strings, each on a separate line. The length of each string does not exceed 200 and contains no spaces.

## Output Format

If the first string s1 is a substring of the second string s2, output `(s1) is substring of (s2)`.  
Otherwise, if the second string s2 is a substring of the first string s1, output `(s2) is substring of (s1)`.  
If neither is true, output `No substring`.

abc
dddncabca

abc is substring of dddncabca