Question

With God’s help,
Hello Rabbi,
I study at a university and wanted to ask a question.
I received a grade of 100 on a math exam, but when I opened the scanned copy of the exam booklet (they upload it to the site so you can appeal), I saw that the sticker the graders put on my booklet does indeed have my ID number on it, but the booklet itself is not mine at all… It’s simply that the other person has an ID number that is fairly similar, and the proctors got confused and put my sticker on his booklet, and possibly the reverse as well (my ID number is on his copy).
So I wanted to ask: do I need to inform that person that his grade is apparently 100, even though there is a concern that mine will be lower…?
Best regards,
Koby