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Problems

Topics
Difficulty
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7024
Red and Black
Easy
7025
Unit Fraction Partition
Easy
7026
Circle and Points
Medium
7027
Water Tank
Easy
7028
Name the Crossing
Very easy
7029
Polyclinic
Easy
7030
Painting
Hard
7031
Significant inversions
Easy
7032
Fortress
Hard
7033
Nested Sets
Hard
7034
Portals
Medium
7047
Intersection — union
Hard
7048
Numbers
Medium
7049
Alien Dictionary
Very easy
7050
Fluorography
Easy
7051
Symmetrical Patterns
Medium
7062
Cubes
Easy
7064
Chess
Very hard
7065
Servers
Easy
7066
Wall
Hard
7067
EIT
Easy
7079
Let it Bead
Medium
7090
Toral Tickets
Medium
7091
Balls
Very easy
7092
Magical Labyrinth
Very hard
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