Задачи
New-year presents#26
Средно · Greedy algorithms
Cycle shifts#27
Лесно · Number theory · Bitmasks · Bitwise Operations
Product#28
Средно · Implementation · Math
The level of palindrome#29
Лесно · Brute force · Strings
Certification#30
Средно · Dynamic programming · Combinatorics
Superstitious Santa Claus#31
Многу лесно · Brute force
Knight and Pawn#32
Средно · Games · Dynamic programming
The favourite numbers of Santa Claus#33
Лесно · Number theory
The word of sponsor#34
Средно · Graphs
Triangles from Matches#35
Средно · Math
Gorynych the Dragon#36
Лесно · Math
Mail of the Sponsor#37
Многу лесно · Graphs · Breadth-first Search
Firs Protection#38
Средно · Convex Hull · Geometry
Sponsor’s Money#39
Лесно · Dynamic programming
Water supply#40
Лесно · Graphs
Command of the Mayor#41
Лесно · Graphs
Green spot#42
Средно · Geometry
Competitors’ quantity of the Olympiad#43
Многу лесно · Number theory
The number of ones#44
Лесно · Dynamic programming
The Fuel#45
Многу лесно · Graphs · Implementation · Greedy algorithms
The Segments#46
Многу лесно · Dynamic programming
The Parquet of the Triangles#47
Лесно · Graphs · Implementation
The Red and Blue Squares#48
Лесно · Geometry
Smart Feeder#49
Лесно · Geometry
The cut number#50
Лесно · Brute force · Math