Problem intelligence
The Number of Good Subsets
HARD · 2 companies · Array · Bit Manipulation · Bitmask · Counting · Dynamic Programming · Hash Table · Math · Number Theory · Sieve Theory
Interview priority
49
medium
Target overlap
0/0
Recency
30
Trend
50
Frequency
95
Company observations
Lowe'sall95.2
Media.netolder57.3
Media.netall52.9
Why this score
unsolved100
high frequency95
Local progress
unseen