Problem intelligence
Remove Invalid Parentheses
HARD · 9 companies · Backtracking · Breadth-First Search · String
Interview priority
54
medium
Target overlap
0/0
Recency
55
Trend
50
Frequency
76
Company observations
Amazon6m14.3
Amazonolder12.5
Amazonall15.7
Bloombergall8.2
Googleolder17
Googleall16.4
Meta6m24.5
Metaolder46.5
Metaall50.1
Microsoftolder22
Microsoftall19.5
Millenniumolder76.4
Millenniumall75.9
Oracleolder26.5
Oracleall25.3
Rubrikolder46.9
Rubrikall45.4
TikTokolder47.1
TikTokall44
Why this score
unsolved100
high frequency76
Local progress
unseen