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10770
ПерестановочкИ
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
11125
Help Prapor
Easy
11137
First to Solve
11723
Combinations with repetitions
Easy
11725
Two arrays
Easy
1
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5
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9