Reason behind "+1" rep?

I opened my account to see a I've gained 1 rep point for the above reason. I'm curious to know the reason behind it?

Other than when an answer is accepted, I don't remember ever dealing with reputation in odd numerical values.

• If you down-voted a non-community wiki answer, you would have then lost $1$ reputation, but you gain this back if that answer was deleted. This appears to be what happened to you (e.g., that is what the "removed" is referring to). Aug 14 at 6:15
• @JohnOmielan, I guess we lose 2 rep on downvoting/downvoted, isn't it? Also, I didn't downvote. (to best of my knowledge) Aug 14 at 6:17
• If you do the down-voting, you will lose just $1$ reputation, but the owner of the answer will lose $2$ reputation. As for you believing you did not down-vote, perhaps you did that accidentally. Note that a link should be included with the line in your reputation tab. Since you won't be able to see any deleted posts, if you provide that link here then I, or anybody else with $10$K or more reputation, can see it & give you more details about that post. Aug 14 at 6:21
• @JohnOmielan I checked the reputation tab and there is no link included with it. Aug 14 at 6:48
• For me, with a "removed +$1$" reputation change, the name is a link. Perhaps the system doesn't provide you one because your reputation doesn't allow you to see the deleted post. Aug 14 at 6:52
• There you go Very likely you downvoted the answer there. The post just got deleted 3 hours ago. Aug 14 at 6:57
• @ArcticChar was the post old? Then I may have downvoted. I did not any recent post. Aug 14 at 7:06
• The post history said it was downvotes both in March and June this year. Aug 14 at 7:09
• @ArcticChar thank you. Ya, I did downvote in July. Mystery solved. Aug 14 at 7:11
• @ArcticChar *June Aug 14 at 7:25
• On your profile you can see 862 upvotes and 3 downvotes. And you can check which posts you downvoted. (This information is visible only to you.) IIRC this list doesn't show deleted posts: Can we see deleted posts which we downvoted? But at least you can see how many posts which are not deleted you downvoted. Aug 14 at 8:10
• @MartinSleziak thank you. You are right. It doesn't show the deleted posts. I can only see 1 downvoted post (which I want to un-downvote, but I can't). Aug 14 at 8:23