Table 1: session_web
***** **** * **** ****** *** *******, * *** ******* ******, ** **** **** *** **** ****** *** ****.
***_**** | ***_**** -----------------+--------------------- **** | **** ****_** | ****** *******_** | ****** ***** | *******(20)
Question 102
Premium Access
Sign in or upgrade to practice this question with full datasets, official solutions, and guided walkthroughs.
< 5050, 100100, 150150, 200200, 250>= 250Table 1: session_web
***** **** * **** ****** *** *******, * *** ******* ******, ** **** **** *** **** ****** *** ****.
***_**** | ***_**** -----------------+--------------------- **** | **** ****_** | ****** *******_** | ****** ***** | *******(20)
Table 2: session_web_duration
*** ****** ** ******* * **** ****** ** *******.
***_**** | ***_**** -----------------+--------------------- **** | **** *******_** | ****** ******** | ***
Sample results
Last Submission
postgresNo submission yet for this engine. Run and submit your query to save it here.
Submit a query to compare against expected output.
Interview timer
Recommended interview pacing
Easy: 5 min for direct warm-up style questions.
Medium: 10 min for multi-step interview queries.
Hard: 15 min for layered questions with tighter time pressure.
A common bar is solving about 2 medium-or-harder questions in a 30 minute interview.
15:00
Run your query to preview results here.