Arboles y Grafos PUJ 2026-II Grupo B C9-4 Raíz del componente; Tarjan en una pasada, Kosaraju en dos

New channel Carlos Delgado - Computación: title sample judged 'whole' (Unedited full lecture recordings from university CS courses (data structures, discrete math, programming languages, nume); passed a second screen for sellers/exam-prep/re-uploads; 1 of 3 sampled transcripts showed teaching, 0 not; every title checked strictly; oEmbed verified.