How to check who has upvoted me? And one thing more if my college student will upvote me then will it be counted?
You should go to your profile by clicking your username in the codechef discuss only . Then click on karma history and there you will have the information you need .
Upvotes of your college mates will count . Don’t misuse this
I guess you never checked your discuss profile that case XD. Do give it a check, it has many useful statistics.