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Problems

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Difficulty
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1799
Transition Year 2. The Bridges Return
Medium
1800
Tic-tac-toe
Very easy
1802
Ropes
Easy
1805
Page Count
Easy
1806
Soccer
Very easy
1808
Post Office
Very easy
1810
Judges' Time Calculation
Medium
1811
Mad Scientist
Very easy
1812
Voting
Very easy
1813
Queen Collisions
Very easy
1814
Mirror, Mirror on the Wall
Very easy
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
1874
Holidays
Hard
1877
Tetris Game Validator
Hard
1885
Number of lines
Very easy
1886
Restoration of points quantity
Medium
1891
Mountain range
Easy
1899
Passage of the Corridor
Easy
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