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Site URL: normalesup.org/~andreani/blog.html
Feed URL: www.normalesup.org/~andreani/blog.xml
Posts: 8
Followers: 1
Retour au FCSC
https://normalesup.org/~andreani/blog/2026-04-13-fcsc-2026/
Published: April 12, 2026 22:00
Après quelques années d’absence, j’ai eu le plaisir de participer à nouveau au France Cybersecurity Challenge qui vient de se terminer. C’est une compétition de cybersécurité organisée par l’ANSSI consistant à résoudre des épreuves en temps limité. Les…
Conventions d’origami 2025
https://normalesup.org/~andreani/blog/2025-11-09-ooraa-mfpp/
Published: November 10, 2025 23:00
Lyon (OORAA) Je rattrapais mon retard sur le toujours excellent podcast Il ne plie plus, il cause ! de Stéphane cet été quand j’arrive sur l’épisode sur l’émulation et que je me dis que ça fait longtemps que je ne suis pas allé à une convention d’origami.…
Lost in regression
https://normalesup.org/~andreani/blog/2024-07-lost-in-regression/
Published: July 7, 2024 22:00
I was recently very confused with a linear regression. More precisely, I realized that my mental model of a linear regression was completely wrong, even though linear regressions are not exactly a new thing to me. If I gave you the scatter plot below, and…
Le FCSC sans se fatiguer
https://normalesup.org/~andreani/blog/2022-05-le-fcsc-sans-se-fatiguer/
Published: May 7, 2022 22:00
C’est le printemps, la saison du France Cybersecurity Challenge et donc de mon billet de blog annuel, apparemment. Organisé par l’ANSSI, l’agence de cybersécurité française, le FCSC est l’occasion de sélectionner les membres de l’équipe de France pour…
La radio pour les nuls
https://normalesup.org/~andreani/blog/2021-05-la-radio-pour-les-nuls/
Published: May 14, 2021 22:00
J’ai eu le plaisir de participer pour la deuxième année au France Cybersecurity Challenge organisé par l’ANSSI, l’agence de cybersécurité française. Parmi les épreuves proposées, une des catégories qui m’attirait le plus cette année était la catégorie…
Guessing lottery game
https://normalesup.org/~andreani/blog/2019-05-guessing-game/
Published: May 14, 2019 22:00
I found a fun problem on reddit some time ago: A number is randomly selected between two bounds. Each player can make one guess, the closest to the selected number wins. The author of this comment notes that they “always use a random number generator for…
Stockholm visit guide
https://normalesup.org/~andreani/blog/2019-05-stockholm/
Published: May 5, 2019 22:00
I spent two weeks in Stockholm, one of them dedicated to visiting the city. Here are some notes that could be useful for travelers. It is not at all exhaustive though, but just the result of my tastes and peregrinations. I would appreciate to know if you…
The perfect speed bump
https://normalesup.org/~andreani/blog/2018-10-perfect-speed-bump/
Published: October 19, 2018 22:00
As he regularly does, Jason Cole recently delighted the readers of his blog with an interesting problem that I will quickly sum up. The problem You have been assigned the task to use a given amount of concrete to build a speed bump over a section of a…