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Problem C. Almost Union-Find
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BJTU Summer Training 2018 Lecture 2 STL
A - 畅通工程
B - New Year Permutation
C - Almost Union-Find
D - Age Sort
E - Open Credit System
F - Calculator Conundrum
G - Easy Problem from Rujia Liu?
H - K Smallest Sums
I - I Can Guess the Data Structure!
J - Broken Keyboard (a.k.a. Beiju Text)
K - Scapegoat
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