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Problems

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Difficulty
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3020
The Seven Percent Solution
3021
Slink
Easy
3022
Persistent Bits
Very easy
3023
Here We Go(relians) Again
3024
Electronic Document Security
Very easy
3025
Guard
Very hard
3026
Rock Skipping
3027
Military parade
Very easy
3028
Family Relay
Hard
3029
Digital row
Very hard
3030
Micro and Tree
Medium
3031
Single-letter palindrome
Medium
3032
Laser
Medium
3033
Hyperspace Disruption
Very hard
3035
Triomino
Easy
3036
Mutation
Easy
3037
Database
Easy
3038
Highway
Hard
3039
Coloring
Very easy
3040
Clipboard
Very easy
3041
Crossroads
Medium
3042
Convex Hull (Queries)
Hard
3043
Class Statistics
3044
Avoiding a disaster
3045
Roll Call
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