المسائل
Sphere#1969
صعب جدًا · Graphs · Shortest paths
David Copperfield is resting#1970
سهل جدًا · Implementation
Fateful Chess Puzzle#1971
سهل جدًا · Combinatorics
Splitting#1972
متوسط · Number theory
Rollback#1973
سهل جدًا · Segment Tree · Prefix Sums · Queries
Random Acts of Kindness Day#1974
سهل جدًا · Math · Implementation
The tightly bound son of the mountains#1975
صعب · Graphs · Shortest paths
Programming is an art!#1976
صعب جدًا · Greedy algorithms
Well, a very common method for graphs...#1977
سهل · Graphs
Organizational Problems: A Topic for a Dissertation?#1978
سهل · Graphs · Graph network flows
Railroad#1979
متوسط · Graphs · Depth-first Search · Graph matchings
Shadow Protocol#1980
سهل جدًا · Chinese remainder theorem
Mushroom#1981
سهل جدًا · Dynamic programming
Highways#1982
متوسط · Graphs
Ricefield#1983
سهل جدًا · Implementation
Fractions#1984
سهل · Math · Combinatorics
Primes Anna#1985
متوسط · Number theory · Implementation
Anna and the palindrome#1986
متوسط · Strings · Brute force
The Next Permutation#1987
سهل جدًا · Implementation
The largest increasing subsequence#1988
سهل · Dynamic programming
Maximum matching#1989
متوسط · Graph matchings · Graphs · Breadth-first Search · Depth-first Search
Domino 2#1990
سهل جدًا · Graphs
Maximum flow#1991
سهل جدًا · Graphs
Dividing the graph#1992
سهل · Graphs
Weighing#1993
سهل جدًا · Math