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Problems
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Problems

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Difficulty
Sort by
4834
k-numbers
Very easy
4837
Combination 2
Very easy
4840
Previously encountered numbers
Very easy
4849
Electric trains
Easy
4860
Cleopatra's Circlet
Medium
4879
Square
Hard
4883
Tic-tac-toe
Medium
4887
Numbers
Easy
4890
Subtraction
Easy
4892
Replacement
Medium
4895
Frog VS mosquito: the last fight!
Easy
4898
Very simple
Very easy
4914
UFOs
Very easy
4953
Men in Black
Very hard
4954
Path
Easy
4962
Game with Cards
Very easy
4972
The calendar
Easy
5040
The Idiot of the Year Contest!
Medium
5041
Parsing Real Numbers
Very easy
5046
Expression Evaluator
Very easy
5048
Diploma
Very easy
5049
Remove spaces
Very easy
5053
Division by a digit
Very easy
5055
Number of days since the beginning of the era
Easy
5057
Spiral
Medium
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