Robert Henson
- rphenson
United States- Other
- No Active Plan. View Details
Submissions Heat Map
Learning Paths (0)
Practice Paths (5)
Dynamic programming
1600 to 1800 difficulty problems
Jump from 2* to 3*
Rise from 3* to 4*
Practice for ZCO and INOI
Contests (61)
March Challenge 2018 DIV 2
A Big Sale, Chef and Glove
October Mega Cook-Off 2018 Division 2
Ada and the Staircase
April Challenge 2018 Division 2
Workers
May Challenge 2018 Division 2
Mighty Friend, Xor Again
June Challenge 2018 Division 2
Naive Chef
July Challenge 2018 Division 2
Strike or Spare
August Challenge 2018 Division 2
Problem Sort, Sheokand and Number, Spell Bob
September Challenge 2018 Division 2
Magician versus Chef, Chef and Adventures
December Challenge 2018 Division 2
Max and Electrical Panel, Chef and Meatballs, Chef and Interactive Contests, Chef and An Ideal Problem
November Challenge 2018 Division 2
Appy Loves One, Chef and Difficult Contests, Chef and Happiness
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
January Challenge 2019 Division 2
Different Neighbours, Lucky Number Game, Distinct Pairs, Fancy Quotes
February Challenge 2019 Division 2
Manhattan Rectangle, Guess It Right, Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Art of Balance, Deputy Chef
March Challenge 2019 Division 2
Chef got Recipes, Chef and Number Game, Chef and a Beautiful Digit, (Challenge) Interleaving Strings
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining, Fencing
May Challenge 2019 Division 2
Matches, Reduce to One, Where to Build the Roads
June Challenge 2019 Division 2
Road Signs, Chef and Proxy, Guddu on a Date, Chef and Ingredients
July Challenge 2019 Division 2
Parity Again, Minimum and Maximum, Chef and Mean
August Challenge 2019 Division 2
Dilemma, Football, Distribute Apples, Zombie and the Caves
September Challenge 2019 Division 2
Easy Fibonacci, Chef and Interesting Subsequences
October Challenge 2019 Division 2
Even Edges, Missing Number, Chef and Maximum Star Value, Array Modification, Operations on a Matrix, Phone Prices
November Challenge 2019 Division 2
Physical Exercise, Hard Sequence, Weapon Value
December Challenge 2019 Division 2
Chefina and Ranges, Plus Multiply, Easy Subsequence Selection, That Is My Score!
January Challenge 2020 Division 2
Chef and Dynamo, Doraemon, Equality, Breaking Bricks
February Challenge 2020 Division 2
No Change Required, The Theatre Problem, School of Geometry, Hard Cash, (Challenge) Raisins, Long Contest and Cook Off Overlaps
April Challenge 2020 Division 2
Strange Number, Squared Subsequences, Unit GCD, Sell All the Cars, Leaked Answers (Challenge), COVID Pandemic and Long Queue
May Challenge 2020 Division 2
Coronavirus Spread, (Challenge) Nanobots, Isolation Centers
June Challenge 2020 Division 2
Even Matrix, The Tom and Jerry Game!, Chef and Icecream, Covid Sampling (Challenge), Chef and String, Chef and Price Control
July Challenge 2020 Division 2
Ada King, Missing a Point, Chef and Card Game, Chef and Strings
August Challenge 2020 Division 2
Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess, Smallest KMP
September Challenge 2020 Division 2
Chefina and Swap, A Problem on Sticks, Chef and Trump Cards, Ada Matrix, Coronavirus Spread 2
October Challenge 2020 Division 2
Positive AND, Replace for X, Covid Run, Chef and Easy Queries
November Challenge 2020 Division 2
Restore Sequence, Ada and Dishes, Iron, Magnet and Wall
January Challenge 2021 Division 2
Fair Elections
December Challenge 2020 Division 2
Hail XOR, Positive Prefixes, Even Pair Sum, Vaccine Production, Vaccine Distribution
February Challenge 2021 Division 2
Frog Sort, Team Name, Prime Game, Maximise Function
March Challenge 2021 Division 2
Interesting XOR!, College Life 4, Consecutive Adding, Paparazzi Gennady, Space Arrays
April Challenge 2021 Division 2
Binary String MEX, Worthy Matrix, Chef and Dice
May Challenge 2021 Division 2 (Rated)
Tree House, Xor Equality, Tic Tac Toe, Modular Equation
June Challenge 2021 Division 2 (Unrated)
Minimum Dual Area, Shortest Route, Bitwise Tuples, Bella ciao, Summer Heat
July Challenge 2021 Division 2 (Unrated)
XxOoRr, Chef vs Bharat, Optimal Denomination
CodeChef Starters 7 Division 2 (Unrated)
Maximum Array Xor, Chess Format, Food Chain
August Challenge 2021 Division 2 (Unrated)
Special Triplets, Array Filling, Chef and Bulb Invention, Problem Difficulties, Olympics Ranking
September Challenge 2021 Division 2 (Unrated)
XOR Equal, Shuffling Parities, 2-D Point Meeting, Airline Restrictions, Travel Pass
SnackDown 2021 - Online Qualifiers
Lucky Number, Maximum Number Of Distinct Elements
SnackDown 2021 - Online Round 1A
Round Robin Ranks , Dance Moves, Min Max LCM
SnackDown 2021 - Online Round 1B
Queens Placement , Largest Laddu, Help Nishant
November Challenge 2021 Division 2 (Unrated)
Wildcard Replacement, Xor Equation, Weird Palindrome Making, Hill Sequence, Equal Coins, Which Fuel is Cheaper, Maximise the bridges
CodeChef Starters 18 Division 2 (Unrated)
Compare those strings, Make them equal
CodeChef Starters 19 Division 2 (Rated)
Indivisible Permutation
CodeChef Starters 20 Division 3 (Rated)
Genes
FizzBuzz Division 2 (Rated)
Magical Planks, Substring Minimum Function, Can_Reach
December Challenge 2021 Division 2 (Unrated)
Valleys and Hills, Rock Paper Scissors, Pyramid Traversal, List of Lists
SnackDown 2021 - Elimination Parallel (Rated for Div 2)
Yet another subarray problem, Remove Element
December Cook-Off 2021 Division 3
Median Minimization, Two Rooks, Friends Meetup, Musical Chairs
December Lunchtime 2021 Division 3
Chef and Vacation Transportation , Chef Loves 1010, Maximum Trio, Romantic Reversals
CodeChef Starters 21 Division 2 (Rated)
Akash and Grid
January Long 2022 - I, Division 3 (Rated)
Keplers Law, Prime in a binary string, Covid Spread
January Long 2022 - II, Division 3 (Rated)
Power Sum, Crying Colours, TCS Examination, Chef and Fixed Deposits
Exun 2021-22 Division 2 (Rated)
Sarthak and his Magic Grid, Vedant and his Hidden Array
January Cook-Off 2022 Division 2
Palindromes Not Allowed, Mean Maximization, Subsegment Divisibility
CodeChef Starters 23 Division 2 (Unrated)
Average of Three, Subarray Mex, Maximising Vacations
February Long 2022 - I, Division 2 (Unrated)
Binary Base Basics, Bitwise Blend, N Queens Puzzle Solved !
February Long 2022 - II, Division 2 (Unrated)
Avoid Fixed Points, Bitwise swaps, Xor Palindrome
CodeChef Starters 26 Division 2 (Unrated)
Careless Chef, Control the Pollution
March Long One 2022, Division 2 (Unrated)
Akash and Function, Substring of a Substring, Exact Marks
CodeChef Starters 29 Division 2 (Rated)
String protocol, Plusle and Minun on Array, Decomposition Reaction
March Long Two 2022, Division 2 (Unrated)
Missing Numbers, Same Parity Swaps in Binary Strings
April Cook-Off 2022 Division 2
Sticks and Rectangles
CodeChef Starters 33 Division 2 (Rated)
Distinct Dilemma, Non Adjacent Flips, Make Them Equal
April Long Two 2022 Division 2 (Unrated)
Geometric Mean Inequality, Pseudo Sorted Array
May Long One 2022 Division 2 (Unrated)
Mystical Numbers, Pushpa , The Attack of Queen
May Long Two 2022 Division 2 (Unrated)
Xor Palindrome, Make them Zero
June Long One 2022 Division 2 (Unrated)
Divisible by i , Alternate Additions, Equal Strings
June Long Two 2022 Division 2 (Unrated)
Count the ACs, Reversal Sorting, Strong Elements
July Long One 2022 Division 2 (Unrated)
Journey of the Knight, Game of Piles Version 1, Slow Solution
July Long Two 2022 Division 2 (Unrated)
To Divide or Not To Divide, Sum of Product 1
August Long 2022 Division 2 (Unrated)
XOR with smallest element, Hello Equation, Two Trains
September Long 2022 Division 2 (Unrated)
Interesting Subarray, Good Pairs
October Long 2022 Division 2 (Unrated)
Binary Substituition, Single Operation Part 1, Single Operation Part 2
November Long 2022 Division 2 (Unrated)
MaxEdges, Split and Maximize, Spliting Balls
Starters 68 Division 2 (Rated)
Boring String, XOR Product, Expense List, Make Money
Starters 69 Division 2 (Rated)
Akash and Dinner, Distinct Sequence
Starters 70 Division 3 (Rated)
Cost of Groceries, Minimum distance between 1s, Prime Reversal
December Long 2022 Division 2 (Unrated)
Divisible by A_i, Gcd of Subarrays, Maximise XOR
Starters 72 Division 3 (Rated)
Indivisible, Apples and oranges
Starters 73 Division 3 (Rated)
Consecutive Xor, Lucky Numbers, Append for OR
Starters 74 Division 3 (Rated)
Chef And Babla, Odd Even Binary String
January Long 2023 Division 3 (Rated)
Asymmetric Swaps, Minimize the Maximum, Array Halves, Far from origin