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Disjoint set union
Difficulty
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8799
Platforms of the New Babylon
Medium
9013
DSU2
Easy
9014
Artifacts
Hard
9015
Groups 1
Very easy
9105
We Need More Managers!
Hard
10346
The Great Revegetation (Silver)
Easy
10423
MooTube (Gold)
10811
Disjoint Sets Union
Very easy
10814
Disjoint Sets Union 2
10945
Virtual Friends
Very easy
10947
Friends
Easy
11000
Road Construction
Very easy
11076
Cossack Vus and the Count
Very hard
1
2
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