You haven't submitted any problem on 31st August

Actually, there may exist a place in the universe where your maximum streak is 814. Depending on how you submit each problem and different timezones across the universe, with 0.99.. (let's assume 0.(9) < 1) probability (fmpov) there exists a place with the maximum streak being strictly greater than 200.

Unfortunately, there definitely (with 1.0 probability) exists another place in the universe, where your maximum streak is 1.

So don't worry about other places! Whether there is a less or more streak. Be hardworking in the place you live. Good luck.

This may be different for each person, but here is my take on the effectiveness of learning. In my opinion, the absolutely best possible competitive programming training method is participating in every ranked contest. The main reason is https://en.wikipedia.org/wiki/Adrenaline#Memory (when you are stressed and have an adrenaline rush, insights about any solved problems are much more likely to remain in your long-term memory). And for a similar reason, the absolutely worst competitive programming training is when you are forcing yourself to solve a certain quota of problems every day regardless of whether you are feeling ill, tired or whatever. Basically, a human brain switches between these three modes of operation:

• "I'm in danger" => the best learning effect.
• "I'm having fun" => a good learning effect (there's even a TEDx Talk video about this).
• "it's a boring chore and I'm tired" => a negligible learning effect.

If maintaining daily streak is fun, then it's perfectly fine. But if it's done just for the sake of inflating some random stats, then this is unlikely to pay off. Additionally, fixating just on CF stats alone is silly. For example, if I participate in a Kickstart and/or ABC contest on some day, then the CF activity tracker showing zero solved problems for that particular day is irrelevant.

There are several days left bro.

Don't expose me lol

Excellent detective work.

Also their coding styles are very similar: [submission:117934900], [submission:123341681]. Both use ios_base::sync_with_stdio(false) instead of ios::sync_with_stdio(false), both don't use #include <bits/stdc++.h>, both leave an empty line before using namespace std, both write int l,r instead of int l, r, both use endl instead of "\n", both write return 0 (it is useless), both use such space: ' ', not " " (look at any Krauze's submission where he uses spaces), both use a combined style of figure brackets (new line before bracket or just a space). The space of search after combining all these facts becomes small.