Problem Description

Check if one string is a rotation of another string using only one substring operation. A rotation means you can move characters from the beginning to the end or vice versa.

Input Format

Two strings on separate lines.

Output Format

Return "true" if the second string is a rotation of the first, "false" otherwise.

Constraints

• 1 ≤ string length ≤ 1000

• Both strings have the same length

• Strings contain only lowercase letters

• Use only one substring check operation

• Case-sensitive comparison

Sample Input/Output

abcde
deabc

true

Explanation

"deabc" is a rotation of "abcde". If we concatenate "abcde" with itself: "abcdeabcde", we can find "deabc" as a substring. This is the key insight for solving with one substring check.