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Problems

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Difficulty
Sort by
7439
Combination
Medium
7533
Restaurant Ratings
7695
Algebraic Teamwork
8381
How many numbers
Easy
8551
Sequences
Easy
8595
Dogs and monkeys
Very easy
8616
Triangle Counting
Easy
9102
Secret Santa
Easy
9540
Numbers with different digits
Very easy
9557
Bins and balls
Very easy
9616
Anti-palindromic strings
Very easy
9890
Balls and boxes
Very easy
10283
Cossack Vus and Addition
10313
Sprinklers 2: Return of the Alfalfa
10335
Cow Poetry
10727
Mentors
10746
Козак Вус та додавання
10753
ABC
10760
Трійки
Very hard
10770
Перестановки
Very hard
10774
Чергове розчарування: задача на парування
Very hard
10826
Vovochka
Very hard
10839
Set
Hard
11120
Lemurian parties
Easy
11123
Black and white
Very easy
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