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Problems

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Difficulty
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2911
Maximum Sum
Easy
2912
Glass Beads
Very easy
2915
XOR pairs
Easy
2918
Translating pebbles
Easy
2919
Is this the left heap?
Easy
2920
Height of the left tree
2921
The Right Path of the Left Tree
Very easy
2922
Union of rectangles 2
Very easy
2923
Tree
Very easy
2924
Tree in a Segment
Easy
2925
Strings in the Tree
Hard
2926
Combined rectangles
Very easy
2927
Union of Sets
2928
Non-prefix codes
Easy
2929
Rain
Easy
2930
The square of a number of units
Hard
2931
Dima and the Famous Tourist
Easy
2932
Dima and lines
Very easy
2933
Dima and the Computer Game
Very easy
2934
Dima and the permutation
Easy
2935
Dima and Percentages
Easy
2936
Dima & module
2937
Maksym and the Time Machine
Easy
2938
Dima and the Time Machine
Very easy
2939
Dima and array 1
Easy
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