http://bebras.dcc.fc.up.pt/examples.html

https://jlaulas.wordpress.com/2019/09/01/ano-letivo-2019-20/
https://ufcd0755tic.blogspot.com/
https://catalogo.anqep.gov.pt/ufcdDetalhe/740

adicionar a .config/openbox/lxde-rc.xml

lxlock

openbox --restart

https://ai2.metricrat.co.uk/guides/howto-setup-redis-server-with-ssl-fo…

a info veio daqui - https://community.appinventor.mit.edu/t/how-much-data-can-a-cloud-db-st…

https://www.efacec.pt/feup-e-efacec-comercializam-tecnologia-no-valor-d…
https://www.porto.pt/pt/noticia/tecnologia-inovadora-rende-cinco-milhoes

https://www.pyramydair.com/blog/2006/08/rws-diana-34/

All users who have installed that same app (apk file) will get the same stored value.

https://developer.android.com/guide/topics/manifest/uses-sdk-element.ht…

https://appinventor.mit.edu/explore/ai2/firebase