Arrays & prefix sums collection
Array and Prefix Sum Solutions
Study 644 arrays & prefix sums problems with clear explanations, problem links, and solutions in the available languages.
Showing problems 1–150 of 644. Every problem in this collection is available across these pages.
Codeforces · 1225B2
Codeforces 1225B2 — TV Subscriptions (Hard Version)
Arrays & prefix sums · 1 language
Codeforces · 1364B
Codeforces 1364B — Most socially-distanced subsequence
Arrays & prefix sums · 1 language
Codeforces · 1660D
Codeforces 1660D — Maximum Product Strikes Back
Arrays & prefix sums · 1 language
LeetCode
Apply Operations to Make All Array Elements Equal to Zero
Arrays & prefix sums · 3 languages
LeetCode
Apply Operations to Make Sum of Array Greater Than or Equal to k
Arrays & prefix sums · 3 languages
LeetCode
Build Array Where You Can Find The Maximum Exactly K Comparisons
Arrays & prefix sums · 3 languages
LeetCode
Check if There is a Path With Equal Number of 0's And 1's
Arrays & prefix sums · 3 languages
LeetCode
Count Cells in Overlapping Horizontal and Vertical Substrings
Arrays & prefix sums · 3 languages