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