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Graph Theory - Union-Find Sets

Pro.ID   Problem Title Difficulty   Notes
1116    Play on Words Difficulty: 1
1142    A Walk Through the Forest Difficulty: 1
1213    How Many Tables Difficulty: 1
1232    畅通工程 Difficulty: 1
1272    小希的迷宫 Difficulty: 1
1325    Is It A Tree? Difficulty: 2
1558    Segment set Difficulty: 1
1811    Rank of Tetris Difficulty: 3
1829    A Bug's Life Difficulty: 1
1856    More is better Difficulty: 1
2473    Junk-Mail Filter Difficulty: 3
3038    How Many Answers Are Wrong Difficulty: 2
3047    Zjnu Stadium Difficulty: 1
3172    Virtual Friends Difficulty: 1
3234    Exclusive-OR Difficulty: 3
3461    Code Lock Difficulty: 2
3635    Dragon Balls Difficulty: 1
3926    Hand in Hand Difficulty: 1
3938    Portal Difficulty: 3

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