https://leetcode.com/problems/number-of-ways-to-split-array/description/


Count splits left_sum >= right_sum #medium #prefix_sum

https://leetcode.com/problems/minimum-number-of-operations-to-move-all-balls-to-each-box/description/


Sum distances to all 1 for every position #medium #prefix_sum

https://leetcode.com/problems/grid-game/description/


Maximum of minimized paths #medium #prefix_sum

https://leetcode.com/problems/product-of-the-last-k-numbers/description/

Running suffix product #medium #math #prefix_product

https://leetcode.com/problems/number-of-sub-arrays-with-odd-sum/description/


Count odd sum subarrays #medium #prefix_sum

https://leetcode.com/problems/maximum-absolute-sum-of-any-subarray/description/


Max abs of subarray sum #medium #prefix_sum

# 05.10.2025
[3003. Maximize the Number of Partitions After Operations](https://leetcode.com/problems/maximize-the-number-of-partitions-after-operations/) medium

Max k-uniq parts after changing one letter #hard #prefix

# 09.12.2025
[3583. Count Special Triplets](https://leetcode.com/problems/count-special-triplets/description) medium

Count a[i]==a[j]*2==a[k] #medium #prefix_sum