Problem
Given a string S, print the longest substring with all the same character. If multiple, print the first.
Input format
Input
input.txt
- String S (1–100, lowercase)
Output format
Output
output.txt
- Longest equal character substring
Example
input
aabbbbccaa
output
bbbb
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Sample cases (from the problem)
Sample Case 1
Input
aabbbbccaa
Expected output
bbbb
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