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Depth-first Search
Difficulty
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122
Mountain routes
Very easy
341
Influenza AH1N1
Easy
553
Recursion
Very easy
900
Travels in Reality
Hard
978
Get a tree
982
Connectivity
Very easy
1098
Queen move!
Very easy
1391
Recursion
Very hard
2820
Knight Moves
Very easy
2924
Tree in a Segment
Easy
3641
Maximum Flow B
Easy
3680
Tree Isomorphism
Easy
3731
Trust
4000
Depth Search
4001
Area of the room
4002
Cheating away!
Very easy
4004
Is there a cycle?
Very easy
4050
Funny Game
Easy
4325
Tree
Hard
4463
Going to movie
Very easy
4672
Word Count
Very easy
4979
Camelot
Very hard
5744
Elecrical Pollution
6257
Dance Reconstruction
6408
Cracking the Safe
Medium
1
2
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