Problem intelligence
Count Valid Paths in a Tree
HARD · 1 companies · Depth-First Search · Dynamic Programming · Math · Number Theory · Primality Test · Prime Number Sieve · Sieve Theory · Tree
Interview priority
43
medium
Target overlap
0/0
Recency
30
Trend
50
Frequency
65
Company observations
Gameskraftolder64.5
Gameskraftall63.8
Why this score
unsolved100
Local progress
unseen