### 123gjweq2's blog

By 123gjweq2, history, 2 months ago,

Hello everyone!

Here is a graph that I put together. It shows a strong correlation between the average IQ of a country (y-axis) and the ratio of the number of active red+ coders in a country to the country's population (x-axis). For example, if a country has 20 active red+ coders (GM, IGM, or LGM) and it has a population of 10000000, then the x-value of the country would be 20/10000000.

The IQ data was collected from a study conducted by Dr. Richard Lynn, and the country population data was collected from Wikipedia. The amount of active red coders per country can be seen on Codeforces. I tried to include every country with 1000+ members on Codeforces in the graph, but I had to leave a few out (such as Belarus) because they didn't have IQ data.

Here is the graph:

Country's Average IQ VS Ratio of the Number of Active Red+ Coders in a Country to the Country's Population

r = .75 (Strong correlation)

r^2 = .56

• -30

By 123gjweq2, history, 2 months ago,

My rating is remarkably stable. I bet you wish you were me with how stable my rating is. I was worried for a second that I might accidentally improve in the recent pinely contest, but thankfully I couldn't solve C and luckily for me my rating converged right under expert: the place where it is meant to stay forever.

• +60

By 123gjweq2, history, 4 months ago,

My personal favorite has got to be tries. Almost every problem out there can be solved using some variation of a trie, which is why they are so cool. It feels like everything in programming, in one way or another, is, in an abstract sense, a trie.

• -24