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GoogleKickStart-2022

★ 47 Open GitHub ↗

🏃 Python3 Solutions of All 32 Problems in GKS 2022

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# [GoogleKickStart 2022](https://codingcompetitions.withgoogle.com/kickstart/archive/2022) ![Language](https://img.shields.io/badge/language-Python3-orange.svg) [![License](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/kamyu104/GoogleKickStart-2022/main/LICENSE) ![Progress](https://img.shields.io/badge/progress-32%20%2F%2032-ff69b4.svg) ![Visitors](https://visitor-badge.laobi.icu/badge?page_id=kamyu104.googlekickstart.2022)

* Python3 solutions of Google Kick Start 2022. Solution begins with `*` means it will get TLE in the largest data set.
* Total computation amount > `10^8` is not friendly for Python3 to solve in 5 ~ 15 seconds.
* A problem was marked as `Very Hard` means that it was an unsolved one during the contest and may not be that difficult.

## Rounds

* [Kick Start 2021](https://github.com/kamyu104/GoogleKickStart-2021)
* [Round A](https://github.com/kamyu104/GoogleKickStart-2022#round-a)
* [Round B](https://github.com/kamyu104/GoogleKickStart-2022#round-b)
* [Round C](https://github.com/kamyu104/GoogleKickStart-2022#round-c)
* [Round D](https://github.com/kamyu104/GoogleKickStart-2022#round-d)
* [Round E](https://github.com/kamyu104/GoogleKickStart-2022#round-e)
* [Round F](https://github.com/kamyu104/GoogleKickStart-2022#round-f)
* [Round G](https://github.com/kamyu104/GoogleKickStart-2022#round-g)
* [Round H](https://github.com/kamyu104/GoogleKickStart-2022#round-g)
* [Code Jam Farewell Rounds](https://github.com/kamyu104/GoogleCodeJam-Farewell-Rounds)

## Round A
| # | Title | Solution | Time | Space | Difficulty | Tag | Note |
|---| ----- | -------- | ---- | ----- | ---------- | --- | ---- |
|A| [Speed Typing](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb33e/00000000009e7021)| [Python3](./Round%20A/speed_typing.py3)| _O(\|P\|)_ | _O(1)_ | Easy | | String |
|B| [Challenge Nine](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb33e/00000000009e7997)| [Python3](./Round%20A/challenge_nine.py3) | _O(logN)_ | _O(logN)_ | Easy | | Math, Greedy |
|C| [Palindrome Free Strings](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb33e/00000000009e762e)| [Python3](./Round%20A/palindrome_free_strings.py3) [Python3](./Round%20A/palindrome_free_strings2.py3) | _O(N)_ | _O(1)_ | Medium | | Backtracking, DP |
|D| [Interesting Integers](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb33e/00000000009e73ea)| [Python3](./Round%20A/interesting_integers.py3) [Python3](./Round%20A/interesting_integers2.py3) | precompute: _O(2835 * log(MAX_B)^2)_<br>runtime: _O(9 * (logB)^2)_ | _O(2835 * log(MAX_B)^2)_ | Hard | | Counting, Memoization |

## Round B
| # | Title | Solution | Time | Space | Difficulty | Tag | Note |
|---| ----- | -------- | ---- | ----- | ---------- | --- | ---- |
|A| [Infinity Area](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008caa74/0000000000acf079)| [Python3](./Round%20B/infinity_area.py3)| _O(logR)_ | _O(1)_ | Easy | | Math |
|B| [Palindromic Factors](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008caa74/0000000000acee89)| [Python3](./Round%20B/palindromic_factors.py3) | _O(sqrt(A) * logA)_ | _O(1)_ | Easy | | Math, String |
|C| [Unlock the Padlock](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008caa74/0000000000acef55)| [Python3](./Round%20B/unlock_the_padlock.py3) | _O(N^2)_ | _O(N^2)_ | Medium | | Memoization |
|D| [Hamiltonian Tour](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008caa74/0000000000acf318)| [Python3](./Round%20B/hamiltonian_tour.py3) [PyPy3](./Round%20B/hamiltonian_tour2.py3) [Python3](./Round%20B/hamiltonian_tour3.py3) | _O(R * C)_ | _O(R * C)_ | Hard | | DFS, Constructive Algorithms, BFS, Spanning Tree, Wall Follower |

## Round C
| # | Title | Solution | Time | Space | Difficulty | Tag | Note |
|---| ----- | -------- | ---- | ----- | ---------- | --- | ---- |
|A| [New Password](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb4d1/0000000000b20f15)| [Python3](./Round%20C/new_password.py3)| _O(N)_ | _O(1)_ | Easy | | String |
|B| [Range Partition](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb4d1/0000000000b20deb)| [Python3](./Round%20C/range_partition.py3) | _O(N)_ | _O(1)_ | Easy | | Math, Greedy |
|C| [Ants on a Stick](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb4d1/0000000000b209bc)| [Python3](./Round%20C/ants_on_a_stick.py3) [Python3](./Round%20C/ants_on_a_stick2.py3) | _O(NlogN)_ | _O(N)_ | Medium | | Sort, Deque |
|D| [Palindromic Deletions](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb4d1/0000000000b20d16)| [PyPy3](./Round%20C/palindromic_deletions.py3) | _O(N^3)_ | _O(N^2)_ | Hard | | Math, Expected Value, Combinatorics, DP, Inclusion-Exclusion Principle |

## Round D
| # | Title | Solution | Time | Space | Difficulty | Tag | Note |
|---| ----- | -------- | ---- | ----- | ---------- | --- | ---- |
|A| [Image Labeler](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008caea6/0000000000b76e11)| [Python3](./Round%20D/image_labeler.py3) [Python3](./Round%20D/image_labeler2.py3) | _O(N)_ on average | _O(1)_ | Easy | | Greedy, Sort, Quick Select |
|B| [Maximum Gain](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008caea6/0000000000b76fae)| [PyPy3](./Round%20D/maximum_gain.py3) [PyPy3](./Round%20D/maximum_gain2.py3) | _O(K^2 + N + M)_ | _O(1)_ | Easy | | Prefix Sum, Sliding Window, Brute Force |
|C| [Touchbar Typing](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008caea6/0000000000b76f44)| [PyPy3](./Round%20D/touchbar_typing.py3) | _O(N * M)_ | _O(N * M)_ | Medium | | Greedy, DP |
|D| [Suspects and Witnesses](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008caea6/0000000000b76db9)| [PyPy3](./Round%20D/suspects_and_witnesses.py3) | _O(N * K)_ | _O(K)_ | Hard | | Logic-Based, Graph, BFS |

## Round E
| # | Title | Solution | Time | Space | Difficulty | Tag | Note |
|---| ----- | -------- | ---- | ----- | ---------- | --- | ---- |
|A| [Coloring Game](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb0f5/0000000000ba856a)| [Python3](./Round%20E/coloring_game.py3) | _O(1)_ | _O(1)_ | Easy | | Greedy, Math |
|B| [Students and Mentors](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb0f5/0000000000ba84ae)| [Python3](./Round%20E/students_and_mentors.py3) [Python3](./Round%20E/students_and_mentors2.py3) | _O(NlogN)_ | _O(N)_ | Easy | | Sort, Binary Search, Two Pointers |
|C| [Matching Palindrome](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb0f5/0000000000ba82c5)| [Python3](./Round%20E/matching_palindrome.py3) [Python3](./Round%20E/matching_palindrome2.py3) [Python3](./Round%20E/matching_palindrome3.py3) | _O(N)_ | _O(N)_ | Medium | | Brute Force, Manacher's Algorithm, KMP Algorithm |
|D| [Pizza Delivery](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb0f5/0000000000ba86e6)| [Python3](./Round%20E/pizza_delivery.py3) | _O(M * N^2 * 2^P)_ | _O(N^2 * 2^P)_ | Hard | | BFS, DP |

## Round F
| # | Title | Solution | Time | Space | Difficulty | Tag | Note |
|---| ----- | -------- | ---- | ----- | ---------- | --- | ---- |
|A| [Sort the Fabrics](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb409/0000000000beefbb)| [Python3](./Round%20F/sort_the_fabrics.py3) | _O(MAX_C * NlogN)_ | _O(MAX_C * N)_ | Easy | | Sort |
|B| [Water Container System](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb409/0000000000bef79e)| [Python3](./Round%20F/water_container_system.py3) | _O(N)_ | _O(N)_ | Easy | | BFS |
|C| [Story of Seasons](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb409/0000000000bef319)| [Python3](./Round%20F/story_of_seasons.py3) [Python3](./Round%20F/story_of_seasons2.py3) | _O(NlogN)_ | _O(N)_ | Medium | | Greedy, Heap |
|D| [Scheduling a Meeting](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb409/0000000000bef943)| [Python3](./Round%20F/scheduling_a_meeting.py3) | _O(D + N + M)_ | _O(D + N + M)_ | Hard | | Line Sweep, Greedy |

## Round G
| # | Title | Solution | Time | Space | Difficulty | Tag | Note |
|---| ----- | -------- | ---- | ----- | ---------- | --- | ---- |
|A| [Walktober](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb2e1/0000000000c174f2)| [Python3](./Round%20G/walktober.py3) | _O(M * N)_ | _O(N)_ | Easy | | Array |
|B| [Curling](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb2e1/0000000000c17c82)| [Python3](./Round%20G/curling.py3) | _O(N + M)_ | _O(N + M)_ | Easy | | Array |
|C| [Happy Subarrays](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb2e1/0000000000c17491)| [Python3](./Round%20G/happy_subarrays.py3) [Python3](./Round%20G/happy_subarrays2.py3) | _O(N)_ | _O(N)_ | Medium | | Prefix Sum, Mono Stack |
|D| [Cute Little Butterfly](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb2e1/0000000000c17b68)| [PyPy3](./Round%20G/cute_little_butterfly.py3) [Python3](./Round%20G/cute_little_butterfly2.py3) | _O(NlogN)_ | _O(N)_ | Hard | | DP, Segment Tree, Coordinate Compression, Sorted List |

## Round H
| # | Title | Solution | Time | Space | Difficulty | Tag | Note |
|---| ----- | -------- | ---- | ----- | ---------- | --- | ---- |
|A| [Running in Circles](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb1b6/0000000000c4766e)| [Python3](./Round%20H/running_in_cycles.py3) | _O(N)_ | _O(1)_ | Easy | | Simulation, Math |
|B| [Magical Well Of Lilies](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb1b6/0000000000c47e79)| [Python3](./Round%20H/magical_well_of_lilies.py3) | _O(MAX_L * log(MAX_L))_ | _O(MAX_L)_ | Medium | | DP |
|C| [Eelectricity](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb1b6/0000000000c47c8e)| [Python3](./Round%20H/electricity.py3) [Python3](./Round%20H/electricity2.py3) [Python3](./Round%20H/electricity3.py3) | _O(N)_ | _O(N)_ | Medium | | Tree DP, Topological Sort, BFS, DFS |
|D| [Level Design](https://codingcompetitions.withgoogle.com/kickstart/round/00000000008cb1b6/0000000000c47792)| [PyPy3](./Round%20H/level_design.py3) | _O(N * sqrt(N))_ | _O(N)_ | Hard | | DP, Greedy, Mono Deque |

GoogleKickStart-2022

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