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