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Problems
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Problems

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Difficulty
Sort by
1692
Numerical Intervals
Easy
1696
The magic number 23
Very easy
1703
Left recursion
1739
A + B
Very easy
1776
Rails
Very easy
1798
Graphic file
1799
Transition Year 2. The Bridges Return
Medium
1800
Tic-tac-toe
Very easy
1802
Ropes
1805
Page Count
1806
Soccer
Very easy
1808
Post Office
Very easy
1810
Judges' Time Calculation
1811
Mad Scientist
1812
Voting
1813
Queen Collisions
Very easy
1814
Mirror, Mirror on the Wall
1815
Top This
Very easy
1819
Lawn mower
Very easy
1842
Triangle
Very easy
1852
Product
Hard
1854
Triangular King
Very easy
1856
Championship on Fungi Sport
Very easy
1870
Testing shuffle machines
Very easy
1871
Squirrel and bamboo
Very easy
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