Hoang Dai Pham

Practice: 

Prime Generator, Marbles, Cutting off Squares, Ordering the Soldiers, Bytelandian gold coins, Team Selection, The Postal Service, Dynamic GCD, Card Shuffle, Music & Lyrics, Different Trips, Arithmetic Progressions, Vacation, Observing the Tree, Furik and Rubik and Sub Array, Counting The Important Pairs, Prime Distance On Tree, Gangsters of Treeland, Pairwise AND sum, Chef and The Colored Grid, Counting D-sets, Polo the Penguin and the Tree, Query on a tree VI, Count on a Treap, Chef and Graph Queries, Sereja and Equality, Two Companies, Build the Tree, Game of Numbers, And Operation, Updating Edges on Trees, Chef and Churu, Course Selection, Sereja and Votes, One Dimensional Kingdoms, Xor Queries, Counting on a directed graph, Eugene and function, Simple Sum, Chef and cakes, Chef And Fibonacci Tree, Mario and Luigi, Chef and Dominating Subarrays, Chef and Amazingness of Numbers, Tree Coloring, Tree Labelling, LIS and LDS, Tree Palindromes, Watson asks Does Permutation Exist, ChefWatson uses Social Network, Restore the Permutation, Chef and Bipartite Graphs, Binary Tree, Chef and Isomorphic Array, Tree Connectivity, Lucas Theorem, Rotate Point, Beautiful Array, Xor Table, Strange Transform, Spectacular Activity Selection, Stick and polygon

ACM-ICPC Asia-Amritapuri Online Contest 2014, Replay: 

Launch Tower

October Challenge 2015: 

Time measure, Count Subarrays, Who dares to be a millionaire, Spheres, Rupsa and Equilateral Triangle

December Challenge 2015: 

Chef and the stones, Plane Division, Oracle Devu and Longest Common Subsequence, Chef and Filters

August Lunchtime 2015: 

Churu and lost string, Make Palindrome, Minimum Maximum

January Long Challenge 2016: 

Rupsa and the Game, Churu and Balls, Devu and Perfume

June Challenge 2016: 

Chef And The Hiring Event, Chef and Rectangle Array, Chef and Array and K, Chef And Binary Operation, Chef and Coins Game, Chef and cities, Devu and an Array

July Challenge 2016: 

Andrash and Stipendium, Chef and Segments, Chef and Tetris, Chef and special numbers, Chef and Robots Competition, Chefland and Electricity

August Challenge 2016: 

Chef and His Garden, Chef and Circle Run, Chef and Chocolate, Chef and Round Run, Funny gnomes, Maximum Grid

September Challenge 2016: 

Chef and Friends, Dividing Machine, Chef and Matrix Division, Chef and digits of a number, Faded Palindromes, JosephLand, Chef and calculation

October Challenge 2016: 

Sereja and Stones, Chef and Keyboard, Big Queries, Fenwick Iterations, Chef and Three Dogs, Power Sums, Chef and Two String, Tree Balancing

November Challenge 2016: 

Count Permutations, Friends Meeting, Urban Development, Gift and Chef, Kirito in Memeland, Chef and squares, Task for Alexey

December Challenge 2016: 

Train Partner, Kth Max Subarray, Kirito in labyrinth, Roses for Alexey, Our Base is Under Attack

March Cook-Off 2016: 

Digital clock, Dual Nim, Alternating subarray prefix

July Cook-Off 2016: 

Chef and Proportion, Chef and Numbers

October Lunchtime 2016: 

FastFood Combos, The Largest Bouquet

QBIT15: 

Deceptive Sudz

February Challenge 2017: 

Chef and Yoda, Interval Game, Chef and Triangles, Chef and his Best Friend, Chef and His Apartment Dues, Most Frequent Element, Gerrymander

March Challenge 2017: 

Cooking Schedule, Completing favorite game, Path Triples On Tree, Xenny and Alternating Tasks, Pishty and birthday, Bear and Extra Number, Bandwidth of a matrix

April Challenge 2017: 

Chef and Digits, Chef and Divisor Tree, Stable market, Heavy-Light Decomposition, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes

August Long Challenge 2017: 

Chef and Rainbow Array, Chef And Fibonacci Array, Chef and Mover, Hill Jumping, Walks on the binary tree, Palindromic Game, Mathison and the Data Warehouse (Challenge), Greedy Candidates, Strings and Graphs, Flower Pots

September Challenge 2017: 

Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Sum of Cubes, Querying on a Grid, Weasel does Xor on Tree, Weasel finds Staircase, Fill The Matrix, Little Chef and Sums

October Challenge 2017: 

Chef and Magic Arrays, Chef and a great voluntary Program, Chef and Cycled Cycles, Shooting on the array, Max Mex, Counter Test For CHEFSUM, A Balanced Contest, Lucky Edge

November Challenge 2017: 

Product on the segment by modulo , Chef Hates Palindromes, Polynomials, Chef and Subarray Queries, Chef goes Left Right Left, Lovers Gift, Periodic Palindrome Construction, Villages and Tribes

July Cook-Off 2017: 

Chang and Bitwise OR, Chang and the Perfect Function, Chang and Perfect Quadruples, Bipartite Graph from Trees

August Cook-Off 2017: 

Game on Stick, Matrix and Chef, Real obtuse, From heaven to earth

October Cook-Off 2017: 

Chef and Counting Test, Chef and Employment Test, Chef and Weird Queries, Chef and Dancing Steps

April Lunchtime 2017: 

Bear and Digit Virus, Bear and Segments, Bear and Segment 01

July Lunchtime 2017: 

Find the Maximum Value, Good Pairs, Travel to all Points, Divide the Set

LoC July 2017: 

Magical Cave And Horse, Chef and his Master, Boss and his Brother, Amit and Nitin , At The End, Region of Calabria

January Challenge 2018: 

Killing Monsters, A humongous Query, Killjee and k-th letter , K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers

TSEC Codeathon: 

Chef and the Balanced Array, String Composition, The height issue, Project Pairings, Chef and his device, Rod costs

March Challenge 2018 DIV 1: 

Pishty and Triangles, Chef Cuts Tree, Chef and Easy Problem, Chef and Gcd Queries, Mix the Colors, Minions and Voting

Problems Authored (0)

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Problems Tested (0)

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Editorials Contributed (0)

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