Problems
Pyramid of Numbers#9609
Hard · Dynamic programming
Mixed sequence#9610
Very easy · Implementation
Development of the territory#9611
Medium · Brute force · Geometry
Lanterns#9612
Hard · Math · Brute force
Forest Fires#9613
Medium · Graphs · Dijkstra algorithm
Coin change problem#9614
Easy · Dynamic programming
Frobenius coin problem#9615
Easy · Number theory · Math
Anti-palindromic strings#9616
Very easy · Combinatorics
Number of positive#9617
Very easy · Implementation
Sum of negative#9618
Very easy · Implementation
Nautilus#9620
Easy · Dynamic programming
Alpine valley#9621
Medium · Graphs · Dynamic programming
Tom's Kitchen#9622
Hard · Dynamic programming · Knapsack · Greedy algorithms
toUpperCase#9625
Very easy · Strings
startsWith endsWith#9626
Very easy · Strings
a^b^c#9627
Easy · Bitwise Operations
Frog#9628
Medium · Dynamic programming
k-th ancestor#9629
Easy · Trees
Bishops#9630
Medium · Implementation · Prefix Sums · Math
Competition of sequences#9631
Very easy · Implementation
The best team#9632
Very easy · Sorting
Go to the finals#9634
Very easy · Implementation
Transport system#9635
Medium · Graphs · Implementation
Dino and colors#9636
Very easy · Greedy algorithms · Math
Dino and snow buildings#9637
Very easy · Math