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862
Message
Easy
863
Line and squares
Very easy
864
SMS
Very easy
865
Arc on the sphere
Very easy
866
Computer Dialogue
Very easy
867
Throwing dice
Easy
868
Watershed
Very easy
869
Anti-QuickSort
Easy
870
Fibostrings
Medium
871
The boundary of the polygon
Very easy
872
Wires
873
Palindromes
Very easy
874
Circular area
Easy
875
Homer Simpson
Easy
876
Garland
Very easy
877
Puzzle multiplication
Very easy
878
Point in polygon
Very easy
879
Plumbing
Easy
880
Center of gravity
Medium
881
D-44
Easy
882
Pyramids
Easy
883
Cricket field
Hard
884
Area of a triangle
Medium
885
Train Formation
Easy
886
Wall
Easy
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