Is it just for me or to all, I can't see submissions for any problem

even my submissions and other people submissions

When I was solving the problem D from the last contest Codeforces Round 1070 (Div. 2), in the contest i wrote the dp arguments like (vertex v, parent of vertex v), it gave TLE see my submission, and using some optimizations i reduced the dp arguments to just 1 and it was the index of the edge, and same it gave TLE :-(

in the contest I was able to optimize this solution using segment tree and binary search and finally it gave AC!

but after the contest I just changed a small thing in my first submission instead of having arguments like (vertex v, parent of vertex v), I changed it to (vertex v, the value of the parent of vertex v) and it was passed!!, see my submission

Can anyone tell me how that happened?

Thanks!

Today after the contest, During the hacking phase, I was successfully hacking some codes, but after a while, I started getting this message:

"Recently, your account was used to crawl. Please change your password to prevent your account from being used for unauthorized activities."

I changed my password twice but the message is still there even after refreshing.

Could someone please tell me what i should do?

just don't solve any problem!. check tourist's profile:

Hello codeforces, I want to share with you the most benefit blog which will help you alot this is the link: I hope you will see this helpful for you in order to get better in CP.

Became Tourist!!