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Set 7
Set 07
Prefix Sums & Range Queries
Seven problems, ramping from Very Easy to Extreme.
Progress · 0/7 solved
Q1
Range Sum Query (single)
VERY EASY
Q2
Multiple Range Sum Queries
EASY
Q3
Equilibrium Index
MEDIUM
Q4
Difference Array Range Updates
MEDIUM-HARD
Q5
Maximum Subarray Sum (Kadane's)
HARD
Q6
2D Prefix Sum (Submatrix Sum Queries)
VERY HARD
Q7
Range Sum With Point Updates (Fenwick/BIT)
EXTREME
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Set 7 · Prefix Sums & Range Queries · DIU ContestHub