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