Problems
Function#1868
Very easy · Dynamic programming
Paths on the board#1869
Very easy · Combinatorics · Dynamic programming
Testing shuffle machines#1870
Very easy · Implementation
Squirrel and bamboo#1871
Very easy · Implementation
Snowmen#1872
Very easy · Data Structures · Prefix Sums
Vertex Cover#1873
Medium · Graphs · Greedy algorithms
Holidays#1874
Hard · Implementation · Dynamic programming
The longest path#1875
Medium · Graphs
The sum is not without variety#1876
Very easy · Prefix Sums · Two pointers
Tetris Game Validator#1877
Hard · Implementation
Make it a rule - always fly GraphAero!#1878
Very easy · Graphs
Test for the Clique Problem#1879
Medium · Graphs
Problem about Cliques#1880
Medium · Graphs
Connect and Disconnect#1881
Easy · Graphs · Disjoint set union
Curved Mirrors#1882
Medium · Greedy algorithms · String suffix structures
Manual sorting#1883
Very hard · Sorting
CHM#1884
Easy · Data Structures · Disjoint set union
Number of lines#1885
Very easy · Implementation
Restoration of points quantity#1886
Medium · Implementation · Brute force
How to Break All Records#1887
Medium · Dynamic programming
Secret Level#1888
Medium · Math
Battlefields#1889
Easy · Math
Breaking the leaderboard#1890
Medium · Greedy algorithms
Mountain range#1891
Easy · Implementation · Prefix Sums
Construction of a warehouse#1892
Very easy · Graphs