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Problems

Topics
Difficulty
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4255
Sum on a segment
Very easy
4256
SumX
Very easy
4257
17 chairs
Very hard
4258
Long Domino
Easy
4259
Minimum in the stack
Very easy
4260
LCS-2
Very easy
4261
Number of inversions
Easy
4262
Distance from the point
Easy
4263
30 chairs
Very easy
4264
How to Kill Time
Easy
4265
Secret Commands "Retreat"
Easy
4266
Appease Inti
Very hard
4267
Babs` Box Boutique
Very easy
4268
Flash Mob
Very easy
4269
Hexagon Perplexagon
Very easy
4270
Backgammon Array Mapping
4271
Parencedence!
Easy
4272
Road Series
Easy
4273
Show Me the Money
Easy
4274
Sofa, So Good
4275
Town Square
Medium
4276
The Trap for the Elephantopotamus
Medium
4277
Let's shoot down the balloon.
Easy
4278
To school by bicycle
Very hard
4279
Convex hull
Hard
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