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Problems
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Problems

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Difficulty
Sort by
9412
GeoGame
Easy
9438
Folding
Very easy
9506
Arithmetic magic
Very easy
9518
Accurate Movement
Very easy
9519
Bad Treap
Hard
9521
Double Palindrome
Medium
9531
Complex numbers: addition and subtraction
Hard
9533
Starting number in the sequence
Easy
9538
Chocolate bar
Very easy
9539
Task about Vova
Very easy
9542
Product of digits
Easy
9547
Factorial (function)
Medium
9551
Sum a*a + ... + b * b
Very easy
9575
Area of a circle
Very easy
9576
The length of a circle
Very easy
9590
Key Storage
Very easy
9607
Watermelons
Hard
9612
Lanterns
Hard
9630
Bishops
Medium
9636
Dino and colors
Very easy
9637
Dino and snow buildings
Very easy
9638
Easy problem for Dino
Very easy
9643
Catalan numbers
Easy
9646
Sum of powers 2
Very easy
9650
Java Reduce a fraction
Very easy
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