المسائل
The Power of the Hero#1893
سهل جدًا · Brute force
Caravans#1894
سهل جدًا · Prefix Sums · Brute force
Who visits early in the morning#1895
سهل · Graphs
Prince or Impostor#1896
سهل جدًا · Strings · String suffix structures
Spinner Wheel#1897
سهل جدًا · Probabilities
Tile Laying#1898
سهل جدًا · Prefix Sums
Passage of the Corridor#1899
سهل · Implementation
Game#1900
متوسط · Games · Math
A very friendly group#1902
سهل · Combinatorics · Bitmasks · Dynamic programming
Trees with an odd number of independent sets#1903
متوسط · Dynamic programming
Maximum degree of a prime#1904
صعب · Number theory
Minimum degree of prime#1905
متوسط · Number theory
Anniversary#1906
صعب · Math · Number theory
Trade#1907
صعب · Graphs · Greedy algorithms
Grid#1908
سهل · Geometry · Math
Drawing#1909
متوسط · Dynamic programming · Probabilities · Combinatorics
Empire#1910
سهل جدًا · Graphs
Reform#1911
صعب جدًا · Graphs · Greedy algorithms
Constellation#1912
سهل · Graphs
Gifts#1913
صعب جدًا · Graph matchings · Dynamic Programming Optimization
ICPC#1914
صعب جدًا · Graphs
Numbers#1915
سهل جدًا · Implementation
English#1916
سهل · Implementation
Diamond#1917
سهل · Dynamic programming
Puzzle#1918
سهل · Greedy algorithms · Sorting