Wrongly Caught in Plagiarism

Dear @admin
I have received an email telling that I was caught under plagiarism in Starters 90 (div 1).

The plagiarism is detected because we both were using same code templates in that problem.

We both have taken the template code(for finding nCr) from the past submission on codeforces
which was accessible to all before/during the contest and only do the changes in the main function

Here is the link from where code template was taken

Here is my submission : Solution: 96420060 | CodeChef

Other person’s submission :Solution: 96462333 | CodeChef

You can see that the code template is same which is reason for plagiarism and I request you to please increase my rating.