** TODO pouvoir désactiver les équipes qui ne participent pas (pour accélérer la génération)
** TODO ajouter des teams sans passer par l'import XML
** TODO page de statistiques
select count(*) as t, id_exercice, name from solved S inner join exercices E ON E.id = S.id_exercice INNER JOIN themes T ON E.id_theme = T.id group by id_exercice order by t DESC;
select id_team, COUNT(*) AS t from exercice_tries group by id_team ORDER BY t;