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