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January Challenge 2018

Maximum Score, K-Concatenation, Partition the numbers, Rectangle, String Merging

April Challenge 2018 Division 2

Workers, Average of Pairs, Count Good Prefixes, Highway Crossing, Weight of Numbers, Cutting Plants, Vaibhav and Ministers, Chef and Array (Challenge)

May Challenge 2018 Division 1

S-T Mincut, Change the Signs, Edges in Spanning Trees, Fake Binary Search, Dibs on Fibs

July Challenge 2018 Division 1

Picking Fruit for Chefs, Gears, No Minimum No Maximum, Subway Ride, Chef and War with Taran (Challenge), Reach Equilibrium, Tom and Jerry, Pizza Delivery

August Challenge 2018 Division 1

Coordinate Compression , Modular GCD, Princess and Dragons, Safe Partition, Lonely Cycles

December Challenge 2018 Division 1

Chef and Interactive XOR, Edge Addition, Directing Edges, Max and Electrical Panel, (Challenge) Delete DAG, Colorblind Feast, Before Having Donuts

November Challenge 2018 Division 1

Chef and Recipes, Appy Loves One, Good Median, Magician versus Chef 2, Binary Strings

October Challenge 2018 Division 1

Walk on Tree, Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard, Coprime Components, Distinct Rows in Submatrices

March Challenge 2019 Division 1

Matchable Permutations, Yet Again a Subarray Problem, Perfect Tree Problem, Treasure Hunt, Cheating on Queue, Chef and Soccer

April Challenge 2019 Division 1

Offer for Chef, Kira Loves Palindromes, Mininum XOR over Tree, Playing with Numbers, Subtree Removal, Edgy

June Challenge 2019 Division 1

Lent Money, Count Arrays, Chef and Ingredients, Chef and His Dish, Intersecting Paths, Sum and GCD, Forgotten Tree 9

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