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Problems

Brute force
Difficulty
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5083
Sum of digits
Very easy
5116
Robot assembler
Very easy
5123
Hailstone HOTPO
5130
Windmill Animation
5153
VSHEOM-43
Easy
5202
Preference
Very hard
5228
Palindrome
Very easy
5243
Reversi
Very hard
5249
Two Lines (Easy)
Easy
5250
Two lines
Very hard
5252
Penalty
Easy
5258
Gifts
Medium
5264
New issue
Easy
5265
Petya Slonikov
Very easy
5288
Common Substring (Easy)
5290
Substring (Easy)
Very easy
5300
Magic Square
Medium
5303
Dvanashky
5313
Matrix (Easy)
Very hard
5341
The Alliances
Very hard
5342
An Arithmetic Rectangle
5345
PIN
Very hard
5382
Fatigue and Patience
Very easy
5384
Couples Contest
5386
Greatest Common Divisor
Easy
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