Khoi Pham

• Username: 5★pvkhoi
• Country:  Vietnam
• Student/Professional:Student
• Institution:Ho Chi Minh City University of Science Vietnam
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

Last 6 Months 2025 (Jul-Dec)2025 (Jan-Jun)2024 (Jul-Dec)2024 (Jan-Jun)

Rating Graph

No. of Contests Participated: 13

Current Ratings Graph Old Ratings Graph

2050 (+3)RatingProvisional
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June Challenge 2018 Division 1(2018-06-11 15:00:00)

Global Rank:   171

Cheated in:   

Ratings System Update

(2018-06-11 15:00:00)

This is the difference due to changing the rating system.This graph is not updated after 20th Dec 2022. Know more

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2050 (+34)RatingProvisional
Rating i Provisional Rating, click to know more

June Challenge 2018 Division 1(2022-12-20 00:00:00)

Global Rank:   171

Cheated in:   

Ratings System Update

(2022-12-20 00:00:00)

This is the difference due to changing the rating system.This graph is not updated after 20th Dec 2022. Know more

How the rating system works?

Learning Paths (0)

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Practice Paths (0)

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Contests (13)

June Challenge 2014

Chef and Functions, Maxim and Progressions, Forgot Password, Guessing Game, Chef and Digit Jumps, Chef and Subarray

July Challenge 2014

Count Substrings

December Challenge 2014

Chef Under Pressure, Alok-nath and His Sanskars, Chef and Bracket-Pairs, XOR with Subset, Chef and Apple Trees, Sereja and GCD

February Challenge 2015

Chef and Chain, Let us play with rank list, Chef and Equality

May Challenge 2015

Chef and Prime Divisors, Chef and Cake, Chef and new recipe, Set Difference , Devu and binary String

June Challenge 2015

Steady tables, Chef and His Friend, Chef and Memory Limit, Chef and Polygons, Anticommutative implication, Chef and String

July Challenge 2015

Chef and Cube, Na2a and lucky stone, Bread, Sereja and Game 2, Addition and Multiplication, MasterChef

September Challenge 2015

Chain of Doughnuts, Count Steps in Matrix, Bank robbery, Lighthouses, Cracking the Code

October Challenge 2015

Time measure, Count Subarrays, Who dares to be a millionaire, Spheres

November Challenge 2015

Eugene and function, Chef and cakes, Simple Sum, Chef and collection of stamps, Receipt Recovery

December Challenge 2015

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

November Challenge 2016

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

June Challenge 2018 Division 1

Two Flowers, Vision

Total Problems Solved: 67