Problem intelligence
Count Array Pairs Divisible by K
HARD · 3 companies · Array · Counting · Euclidean Algorithm · Greatest Common Divisor · Hash Table · Math · Number Theory
Interview priority
46
medium
Target overlap
0/0
Recency
30
Trend
50
Frequency
76
Company observations
Amazonall5
PayPalall73.2
Qualcommolder76.2
Qualcommall67.9
Why this score
unsolved100
high frequency76
Local progress
unseen