Thanks, i finished it. :) it was dist[i] + dist[j] - 2*dist[lca(i, j)]
"this problem is difficult" :( http://acmicpc-live-archive.uva.es/nuevoportal/data/problem.php?p=4809 I dont have idea how to solve it. -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algoge...@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
