समस्याएँ
Parallelepiped#1
बहुत आसान · Math
Grandchildren#2
बहुत आसान · Math
Colorful Balls#3
आसान · Brute force · Combinatorics
Colorful String#4
आसान · Combinatorics · Greedy algorithms
Painting stones#5
मध्यम · Greedy algorithms · Math · Sorting
Pairwise Product#6
मध्यम · Prefix Sums · Math · Combinatorics
Sashko-Array Constructor#7
मध्यम · Prime factorization · Greedy algorithms
Sets#8
मध्यम · Combinatorics · Number theory · Binary Search
Pies#9
बहुत आसान · Math
Arithmetic Mean#10
बहुत आसान · Math
Cossack Vus and Friend at CP Olympiad#11
आसान · Implementation
Add and Minimize#12
मध्यम · Greedy algorithms · Sorting
Magic Knights#13
मध्यम · Combinatorics · Math
Trivial? Solve It!#14
मध्यम · Number theory · Math · Prefix Sums
Rook#15
बहुत आसान · Math
Coordinates#16
बहुत आसान · Math
Sleepy Sasha is Trouble at the University#17
बहुत आसान · Math
Bohdan against "tails"#18
आसान · Hashing
Pasha is also against "tails"?#19
आसान · Sorting · Math
Anton buys a piglet#20
कठिन · Greedy algorithms · Binary Search · Constructive Algorithms · Number theory