Problem intelligence
Count of Range Sum
HARD · 5 companies · Array · Binary Indexed Tree · Binary Search · Divide and Conquer · Merge Sort · Ordered Set · Segment Tree · Treap
Interview priority
63
medium
Target overlap
0/0
Recency
100
Trend
81
Frequency
69
Company observations
Amazon90d21.2
Amazon6m20.9
Amazonolder15.6
Amazonall20
Google6m11.8
Googleolder7
Googleall23.3
Infosys30d68.6
Infosys90d66
Infosys6m56.2
Infosysall31.3
Metaolder15.3
Metaall14.4
Morgan Stanleyall52.6
Why this score
recent activity100
unsolved100
trending81
Local progress
unseen