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Problems
Prefix Sums
Difficulty
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160
Dancing school
Easy
221
Mountain tourism
Easy
282
Sails
Hard
534
Lawrence of Arabia
Medium
682
Sum on a segment
Very easy
683
Partial matrix sum
684
Sum in a matrix
Very easy
685
Sum on parallelepiped
Easy
695
Range Variation Query
Very easy
723
Sea Quadrille
805
Normal MaxSum
Easy
861
Matrix Summation
Very easy
1026
Cards
Hard
1175
Monsters
Hard
1179
Substrings
Very easy
1350
Deoxyribonucleic acid
Easy
1415
Rock of Advice
Very easy
1464
Simple Question
Very easy
1476
Battleship
Very easy
1496
Water
Hard
1569
Divisors
Very easy
1570
Be Efficient
Very easy
1621
The sum from 1 to n
Medium
1673
Sim-siм
Medium
1679
Honest Chain
Very easy
1
2
3
4
5
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11