Osama Bin Qashem

• Username: 4★osamaqashem
• Country:  Bangladesh
• Student/Professional:Student
• Institution:East West University, Bangladesh
• CodeChef Pro Plan: No Active Plan. View Details

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

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No. of Contests Participated: 28

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Starters 165 (Rated)(2024-12-18 22:00:02)

Global Rank:   425

Cheated in:   

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Global Rank:   0

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Contests (28)

Starters 102 Division 4 (Rated)

Bit Play, Sports Section, Selling Insurance, Chef and Stocks

Starters 110 Divison 3 (Rated)

Water Park, Airlines, Marbles,  Am I Lucky!, Monsters

Starters 111 Division 2 (Rated)

Beautiful Strings, Reach Codetown

Starters 112 Division 2 (Rated)

Cursed Indices, 3 Logicians Walk into a Bar, Max Nutrition

Starters 116 Division 2 (Rated)

Chef Product, Hattrick, ORST , Minimum Wage, Access Control

Starters 120 Division 2 (Rated)

Count Subarrays, Valentines Contest, Sub or Swp, Valentine Gifts

Starters 121 Division 2 (Rated)

Caesar Cipher Lite, Magic Palindrome, Leg Space, Anti Adjacent Swaps, The Man Code

Starters 124 Division 2 (Rated)

Binary Parity, Table Strength, Swap and Unite

Starters 130 Division 2 (Rated)

Make Equal, Alternating Binary String, Good Binary String

Starters 132 Division 2 (Rated)

ALIEN-OR, Optimal Flip, Change Please, ICE CREAM, Prime Query, GAME 11

Starters 133 Division 2 (Rated)

ABC Conjecture 3, Powered Parameters, Legs on a Farm, Devouring Donuts, Maximum Alternating Sum

Starters 142 Division 2 (Rated)

Chef loves Pizza Chef loves halfs, Writing Speed, Penalty Shoot-out, Array Removal, Number Hunt

Starters 143 Division 2 (Rated)

Binary Conversion

Starters 146 Division 2 (Rated till 5 stars)

Bouncing Ball, Permutation Construction, Knockout tournament

Starters 147 Division 2 (Rated till 5 stars)

Truth Teller And Liars 101, Independence Day 101, Non-Primes 101, Gold Coins 101

Starters 148 Division 2 (Rated)

Let Me Eat Cake!, Clearance Sale

Starters 149 (Rated)

Magical World, Easy Subarray Sum, Maximise Sum, Approximate Answer, Chef Loves Beautiful Strings (Easy Version)

Starters 150 (Rated)

Equal Pairs (Hard), Find Multiset State, IOI 2024, Ratio By 2, Equal Pairs (Easy)

Starters 151 (rated)

Ball Game, Sequence Search, Convert string

Starters 154 (Rated)

GCD and XOR, Add 1 or 2 Game

Starters 155 (Rated)

GCD to 1 (Easy), GCD to 1 (Hard), Replace With First, Prefix Suffix Min Max

Starters 156 (Rated)

Partition Score, Even Numbers Hate

Starters 157 (Rated)

Small, Smaller, Smallest, Unmedian, Not-too-far Replacement

Starters 158 (Rated)

Largest Subsequence, XOR Smaller, Buying Game, Multiply 2 to Minimize

Starters 159 (Rated)

Super Hero, Chess Colouring, Elections

Starters 160 (Rated)

Palindrome Love, Buying Order (Easy), Equate S and T

Starters 162 (Rated)

Adjacent Sum Array, Permutation Mod K

Starters 165 (Rated)

Christmas Cake, Reverse and Alternate, Poster Perimeter, A to B, Stable Array, Bulk Discount

Total Problems Solved: 127