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ECPC Practice - Solved Problems

CodeForces

  1. B - Dorms of war : Codeforces Round #788 (Div. 2)
  2. B - Robots : Educational Codeforces Round 128 (Rated for Div. 2)
  3. A - Game with Cards : Educational Codeforces Round 129 (Rated for Div. 2)
  4. A - Dragons : Codeforces Round #142 (Div. 2)
  5. A - Digit Minimization : Codeforces Round #792 (Div. 1 + Div. 2)
  6. B - Odd Subarrays : Codeforces Round #792 (Div. 1 + Div. 2)
  7. A - Circular Local MiniMax : Codeforces Round #794 (Div. 1)
  8. K - Medians and Partition : 2018-2019 ACM-ICPC, NEERC, Southern Subregional Contest, Qualification Stage
  9. A - Game With Sticks : Codeforces Round #258 (Div. 2)
  10. A - Everything Everywhere All But One : Codeforces Round #794 (Div. 2)
  11. B - Shoe Shuffling : CodeCraft-22 and Codeforces Round #795 (Div. 2)
  12. B - Lecture : Codeforces Round #284 (Div. 2)
  13. B - Tokitsukaze and Good 01-String (easy version) : Codeforces Round #789 (Div. 2)
  14. A - Keyboard : Codeforces Round #271 (Div. 2)
  15. A - AvtoBus : Codeforces Round #791 (Div. 2)
  16. B - Big Vova : Codeforces Round #669 (Div. 2)
  17. D - X-Sum : Codeforces Round #790 (Div. 4)
  18. B - Even Array : Codeforces Round #650 (Div. 3)
  19. A - Raising Bacteria : Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]
  20. A - Tokitsukaze and All Zero Sequence : Codeforces Round #789 (Div. 2)
  21. B - Borze : Codeforces Beta Round #32 (Div. 2, Codeforces format)
  22. A - IQ test : Codeforces Beta Round #25 (Div. 2 Only)
  23. C - Most Similar Words : Codeforces Round #790 (Div. 4)
  24. A - Theatre Square : Codeforces Beta Round #1
  25. A - Squats : Codeforces Round #242 (Div. 2)
  26. A - Cut Ribbon : Codeforces Round #119 (Div. 2)
  27. A - Domino piling : Codeforces Beta Round #47
  28. B - Equal Candies : Codeforces Round #790 (Div. 4)
  29. A - Is your horseshoe on the other hoof? : Codeforces Round #141 (Div. 2)
  30. A - Print a Pedestal (Codeforces logo?) : Codeforces Round #797 (Div. 3)
  31. B - T-primes Codeforces Round #142 (Div. 2)
  32. A - Ultra-Fast Mathematician : Codeforces Beta Round #57 (Div. 2)
  33. B - Honest Coach : Codeforces Round #644 (Div. 3)
  34. C - Registration system : Codeforces Beta Round #4 (Div. 2 Only)
  35. B - Dictionary : Codeforces Round #786 (Div. 3)
  36. A - Lex String : Codeforces Round #798 (Div. 2)
  37. A - Anton and Danik : Codeforces Round #379 (Div. 2)
  38. D - Black and White Stripe: Codeforces Round #797 (Div. 3)
  39. B - Sort the Array : Codeforces Round #258 (Div. 2)
  40. C - Restoring the Duration of Tasks: Codeforces Round #797 (Div. 3)
  41. B - Multiply by 2, divide by 6: Codeforces Round #653 (Div. 3)
  42. A - Collecting Coins : Codeforces Round #615 (Div. 3)
  43. B - File Name : Codeforces Round #481 (Div. 3)
  44. A - Bit++ : Codeforces Round #173 (Div. 2)
  45. C - Where's the Bishop? Codeforces Round #799 (Div. 4)
  46. A - Marathon: Codeforces Round #799 (Div. 4)
  47. A - Cut Ribbon: Codeforces Round #119 (Div. 2)
  48. A - String Task : Codeforces Beta Round #89 (Div. 2)
  49. A - Stones on the Table : Codeforces Round #163 (Div. 2)
  50. B - Balanced Array : Codeforces Round #636 (Div. 3)
  51. A - Young Physicist : Codeforces Beta Round #63 (Div. 2)
  52. B - Interesting drink: Codeforces Round #367 (Div. 2)
  53. A - Subrectangle Guess : Codeforces Round #801 (Div. 2) and EPIC Institute of Technology Round
  54. B - Equal CandiesCodeforces Round #790 (Div. 4)
  55. A - Chat room : Codeforces Beta Round #54 (Div. 2)
  56. A - Police Recruits :Codeforces Round #244 (Div. 2)
  57. A - Petya and Strings : Codeforces Beta Round #85 (Div. 2 Only)
  58. A - Fox And Snake : Codeforces Round #290 (Div. 2)
  59. A - Team Olympiad : Codeforces Round #279 (Div. 2)
  60. B - NIT Destroys the Universe : Codeforces Global Round 21
  61. A - HQ9+ : Codeforces Beta Round #96 (Div. 2)
  62. B - Fence : Codeforces Round #211 (Div. 2)
  63. A - watermelon : Codeforces Beta Round #4 (Div. 2 Only)
  64. A - Boy or Girl : Codeforces Round #146 (Div. 2)
  65. B - XOR Mixup : Codeforces Round #803 (Div. 2)
  66. A - Team : Codeforces Round #143 (Div. 2)
  67. B - Fair Division :Codeforces Round #693 (Div. 3)
  68. A - Lucky? : Codeforces Round #790 (Div. 4)
  69. A - Soldier and Bananas : Codeforces Round #304 (Div. 2)
  70. A - Black Square : Codeforces Round #247 (Div. 2)
  71. C - Fishingprince Plays With Array : Codeforces Global Round 21
  72. A - Nearly Lucky Number : Codeforces Beta Round #84 (Div. 2 Only)
  73. A - Word Capitalization : Codeforces Round #172 (Div. 2)
  74. A - Games : Codeforces Round #164 (Div. 2)
  75. A - Buy a Shovel : Codeforces Round #377 (Div. 2)
  76. B - Nirvana : Codeforces Round #549 (Div. 2)
  77. C - 3Sum closure : Codeforces Round #803 (Div. 2)
  78. F - 3SUM : Codeforces Round #799 (Div. 4)
  79. B - Two Tables : Educational Codeforces Round 112 (Rated for Div. 2)
  80. A - Beautiful Matrix : Codeforces Round #161 (Div. 2)
  81. A. Colorful Stones (Simplified Edition) : Codeforces Round #162 (Div. 2)
  82. C - White Sheet : Codeforces Round #587 (Div. 3)
  83. B - Almost Ternary Matrix : Codeforces Round #804 (Div. 2)
  84. A - Cheap Travel : Codeforces Round #266 (Div. 2)
  85. B - Palindromic Numbers : Codeforces Round #802 (Div. 2)
  86. A - Helpful Maths : Codeforces Round #197 (Div. 2)
  87. A - Gravity Flip : Codeforces Round #238 (Div. 2)
  88. B - Taxi : VK Cup 2012 Qualification Round 1
  89. A - Coins : Codeforces Round #523 (Div. 2)
  90. A - Bear and Big Brother : Codeforces Round #405 (rated, Div. 2, based on VK Cup 2017 Round 1)
  91. A - Way Too Long Words : Codeforces Beta Round #65 (Div. 2)
  92. A - Vanya and Fence : Codeforces Round #355 (Div. 2)
  93. A. Free Ice Cream : Codeforces Round #359 (Div. 2)
  94. B. Who's Opposite? : Codeforces Round #739 (Div. 3)
  95. A. Presents : Codeforces Beta Round #97 (Div. 2)
  96. A - Lucky Division : Codeforces Beta Round #91 (Div. 2 Only)
  97. A. Mahmoud and Longest Uncommon Subsequence : Codeforces Round #396 (Div. 2)
  98. A. Die Roll : Codeforces Beta Round #9 (Div. 2 Only)
  99. A - Laptops : Codeforces Round #260 (Div. 2)
  100. A - Word : Codeforces Beta Round #55 (Div. 2)
  101. A. Shaass and Oskols : Codeforces Round #178 (Div. 2)
  102. A. Translation : Codeforces Round #178 (Div. 2)
  103. A. Magnets: Codeforces Round #200 (Div. 2)
  104. A. Panoramix's Prediction : Codeforces Beta Round #69 (Div. 2 Only)
  105. A. Snacktower : Codeforces Round #398 (Div. 2)
  106. A. Oath of the Night's Watch : Divide by Zero 2017 and Codeforces Round #399 (Div. 1 + Div. 2, combined)
  107. A. Juicer : AIM Tech Round 3 (Div. 2)
  108. A - Borya's Diagnosis : Codeforces Round #443 (Div. 2)
  109. A. Carrot Cakes : Playrix Codescapes Cup (Codeforces Round #413, rated, Div. 1 + Div. 2)
  110. A - Olesya and Rodion : Codeforces Round #324 (Div. 2)
  111. D. Double Strings : Codeforces Round #806 (Div. 4)
  112. C. They Are Everywhere : Codeforces Round #364 (Div. 2)
  113. A. Pangram : Codeforces Round #295 (Div. 2)
  114. C - Mark and His Unfinished Essay: Codeforces Round #807 (Div. 2)
  115. B. Friends and Candies: Codeforces Round #725 (Div. 3)
  116. A. Twins : Codeforces Round #111 (Div. 2)
  117. C. Two Teams Composing : Codeforces Round #634 (Div. 3)
  118. A - Cards with Numbers : Codeforces Round #155 (Div. 2)
  119. A. Even Odds : Codeforces Round #188 (Div. 2)
  120. A. I Wanna Be the Guy : Codeforces Round #268 (Div. 2)
  121. A. Valera and X : Codeforces Round #237 (Div. 2)
  122. J. Smooth Developer : FCAI - CU Team Contest #2 2022
  123. A. Arpa’s hard exam and Mehrdad’s naive cheat : Codeforces Round #383 (Div. 2)
  124. C. Color the Picture : Codeforces Round #810 (Div. 2)
  125. A. Calculating Function : Codeforces Round #277 (Div. 2)
  126. A. Theatre Square : Codeforces Beta Round #1
  127. A. Anton and Polyhedrons : Codeforces Round #404 (Div. 2)
  128. B. Luke is a Foodie : CodeTON Round 2 (Div. 1 + Div. 2, Rated, Prizes!)
  129. A - Panoramix's Prediction : Codeforces Beta Round #69 (Div. 2 Only)
  130. E. Add Modulo 10 : Codeforces Round #811 (Div. 3)
  131. A. Is it rated? : Codeforces Round #412 (rated, Div. 2, base on VK Cup 2017 Round 3)
  132. A. 2-3 Moves : Educational Codeforces Round 133 (Rated for Div. 2)
  133. A - Good Number : Codeforces Round #213 (Div. 2)
  134. B - Petya and Countryside : Codeforces Beta Round #61 (Div. 2)
  135. B. Decoding : Codeforces Round #386 (Div. 2)
  136. B. Sum of Digits : Codeforces Beta Round #79 (Div. 2 Only)
  137. F. Build a Tree and That Is It : Codeforces Round #811 (Div. 3)

Leetcode

  1. Find the Town Judge : Problem #997
  2. Minimum number of vertices to reach all nodes: Problem #1557
  3. Container With Most Water: Problem #11
  4. Coin Change : Problem #322
  5. Add Two Numbers: Problem #2
  6. Check If a String Contains All Binary Codes of Size K Problem #1461
  7. Maximum Number of Darts Inside of a Circular Dartboard Problem #1453
  8. Range Sum Query 2D - Immutable Problem #304
  9. Delete Operation for Two StringsProblem #583
  10. Game of Life Problem #289
  11. Find the Highest Altitude Problem #1732
  12. Length of Last Word Problem #58
  13. Longest Palindromic Substring Problem #5
  14. Maximum Erasure Value Problem #1695
  15. Merge Sorted Array Problem #88
  16. Remove Palindromic Subsequences Problem #1332
  17. Replace Elements in an Array problem #2295 18.Search Insert Position problem #35
  18. Squares of a Sorted Array -O(N) Complexity problem #977
  19. Successful Pairs of Spells and Potions problem #2300
  20. Sudoku Solver problem #37
  21. Sum of Numbers With Units Digit K problem #2310
  22. Triangle problem #120
  23. Valid Sudoku problem #36
  24. Two Sum II - Input Array Is Sorted problem #267
  25. Furthest Building You Can Reach Problem # 1642
  26. Course Schedule III Problem #630
  27. Watering Plants Problem #2079
  28. Construct Target Array With Multiple Sums Problem #1354
  29. Count Unreachable Pairs of Nodes in an Undirected Graph Problem #2316
  30. Rotate Image : problem #48

AtCoder

  1. B - Intersection : AtCoder Beginner contest 199

HackerRank

  1. Jesse and cookies : Prepare-Data Structures - Heap
  2. Pairs: Prepare-Algorithms-Search
  3. Simple Text Editor : One Week Preparation Kit - Day 6
  4. Truck Tour : Prepare - Dara Structures - Queues
  5. Encryption :Prepare - Algorithms - Implementation
  6. Flipping The Matrix :Prepare - Algorithms - Constructive Algorithms
  7. Queue Using Two Stacks: Data Structures - Queues
  8. Sherlock and the Valid String Prepare - Algorithms - Strings

SPOJ

  1. Hierarchy : MAKETREE - Hierarchy

Typing SVG

Name No. of Streaks Solved Unsolved Team
Mohamed Waleed 🔥 34 32 0 Others
Kareem Sakkary 🔥 34 32 0 ARK-team
Nada Mohamed 🔥 33 31 0 Brownies
Ahmed Yehia 🔥 32 30 0 Code-Killers
Omar Gaafar 🔥 31 30 0 H2O
Nour El Dean 🔥 30 29 0 Code-Killers
Merna 🔥 30 29 0 Debug Entity
Hossam 🔥 30 29 0 H2O
Mohaned Hesham 🔥 29 28 0 Code-Killers
Mahmoud Aziz 🔥 29 27 0 Spider_main()
Nour Mohamed 🔥 28 28 1 Debug Entity
Shahd Moamen 🔥 27 27 0 SYM-Error
Tolba 🔥 26 26 1 Others
Abdelrhman Reda 🔥 24 24 0 Spider_main()
Mahmoud Adel 🔥 21 21 0 Others
Nourhan Ibrahim 🔥 18 24 1 Spider_main()
Mohamed Emad 🔥 13 13 0 Others
Rana Essam 🔥 10 26 2 ARK-team
Hoda Samir 🔥 8 27 1 Brownies
John 🔥 3 13 2 Others
Abdullah Hegab 🔥 1 8 18 Others
Adham Hussin 😡 -1 8 11 Others
Ahmed El Sayed 😡 -2 7 12 Others
Abdelrahman Atef 😡 -3 8 13 Others
Shahd Mostafa 😡 -4 12 13 Others
Maya Hesham 😡 -4 21 7 Brownies
Youssef Diaa 😡 -4 3 21 Others
Asmaa Heikal 😡 -5 25 6 ARK-team
Noor Eyad 😡 -5 6 20 Debug Entity
Shehab 😡 -5 10 11 Others
Yousef Alaa 😡 -6 6 20 SYM-Error
Nourhan 😡 -13 12 15 Others
Ahmed Tarek 😡 -16 8 18 Others
Fares 😡 -17 9 18 Others
Mahmoud 😡 -19 3 21 Others
Hatem 😡 -20 4 23 H2O

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