i'm 100% sure that during biweekly contest 73 , i had solved 3 questions but now it shows that i had solved only 2 ,how can i not solve 1st problem in contest ,lol , i have been solving 3 problems in every contest for a while so it doesn't add up.
so what im asking is that "is it possible that my submission , which during contest got AC verdict be given WA after contest" ?

i request leetcode's team to provide explanation for this as it affects my profile ratings.
thank you!