Brilliant Streaks

Logic Level 2

Vighnesh loves solving problems on Brilliant. When I started a one day streak, he had reached a 15 day streak.
When I reached a 5 day streak , he was reached a 19 day streak. But, being a busy man, He couldn't solve problems on Brilliant for some days.

The main assumption should be that being busy he was not solving problems between those days that I'vent checked.

After some days when I checked my stats, I saw that had reached a 19 day streak And he re-established his streak to two days. For how many days was he not able to solve problems?

Find the maximum number of days that he was not able to solve problems.

Note: I Didn't Had Any Break In My Streak.

Details and Assumptions :

Brilliant streaks are defined as the number of days when a user solves at least one problem on a particular day continuously. Thus a 5 day streak means that a user solved problems for 5 days continuously.


The answer is 12.

Harshit Mittal by Harshit Mittal , 23, India

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1 solution

Harshit Mittal
Apr 10, 2016

On My 19th Day Streak Vighnesh Was On His 2nd Day Streak
When I Was On My 18th Day Streak Vighnesh Was On His 1st Day Streak.........
It Means That He Was Not Using Brilliant Between My 6th - 17th Days Streak.....
So He Was Not Solving Problems For 12 Days.


1 Helpful 0 Interesting 0 Brilliant 0 Confused

But, how do you know that he did no problems on your 10th day streak?

All that you know if he didn't solve a problem on your 17th day.

Calvin Lin Staff - 5 years, 2 months ago

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Thanks I've edited the problem

Harshit Mittal - 5 years, 2 months ago

Also, what if Harshit had also stopped solving problems for some days and even Vignesh say for 30 days and after that he made a 19 day streak and Vignesh Started after 30+17=47 days. He must mention that the streak of 19 days is a continuation of the previous streak not an altogether a new one.

Kushagra Sahni - 5 years, 2 months ago

you really should add two thing to your question

  1. You do not have any break between your streak

  2. Asking for the maximum days possible.

Tran Hieu - 5 years, 2 months ago

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Thanks, i Just Added Your first Suggestion.

Harshit Mittal - 5 years, 2 months ago

Thanks. I've added your point to the problem statement.

In future, if you spot any errors with a problem, you can “report” it by selecting "report problem" in the “line line line” menu in the top right corner. This will notify the problem creator who can fix the issues.

Brilliant Mathematics Staff - 5 years, 2 months ago

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