c a l c u l a t i n g t h e m e a n i n g o f l i f e

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16139273220807160675859275

kylin

To Do List: el B, 6 D, gne, etw, ampi, tej, l (, - gar, e col, 2 - pa, ler co

Order of problem type best to worst:

• Graph Theory
• Divide & Conquer
• Data Structures
• DP
• Math
• Interactive
• String
• Constructive
• Greedy
• Geometry
• those confusing and annoying ad hoc problems...

note to self:

-3 mod 2 is -1 according to C++

(-1)/2 = 0 not -1 according to C++

In C++ vector size is unsigned long long so this: (vector<int>{}).size() > -1 is false even though 0 > -1 because it changes -1 to unsigned

(a&b+c)=(a&(b+c)) not ((a&b)+c) according to C++

Good format?

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Log

First 3 Point Solve - June 2019: Hello, World!

First 5 Point Solve - August 2019: CCC '00 J1 - Calendar

First 7 Point Solve - February 2020: TLE '17 Contest 8 P1 - Artificial Intelligence

First 10 Point Solve - November 2020: CCC '20 S2 - Escape Room

First 12 Point Solve - January 2022: CCC '18 S3 - RoboThieves ... wait what this got changed to 10 points

First 15 Point Solve - December 2021: CCC '12 S4 - A Coin Game

First 17 Point Solve - May 2022: CCC '17 S4 - Minimum Cost Flow

First 20 Point Solve - May 2022: CCC '16 S5 - Circle of Life

First 25 Point Solve - April 2025: APIO '11 P1 - Table Coloring ... ah nearly 3 years after my first 20 point solve

First 30 Point Solve - June 2025: IOI '14 P6 - Holiday (Standard I/O)

First 35 Point Solve - July 2025: CCO '25 P6 - Shopping Deals

First 40 Point Solve - September 2025: IOI '11 P5 - Dancing Elephants

First 45 Point Solve - :

First 50 Point Solve - :

yellow - Feb 25, 2025 . . . when rated contest :(

500 points - May 11, 2025

900 problems - June 14, 2025

600 points - July 12, 2025

1000 problems - September 16, 2025

How to waste 2 hours:

Let ~F(x)=\sum_{a=0}^{x} \sum_{b=0}^{x} \sum_{c=0}^{x} \sum_{d=0}^{x} \sum_{e=0}^{x} \sum_{f=0}^{x} \sum_{g=0}^{x} \sum_{h=0}^{x} (a^b)|(c^d)|(e^f)|(g^h)~ where | is the bitwise OR operator.

~F(62)^{F(43)} \mod 10^9+7 = ?~

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i have no idea what this is but it's ~interesting~

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