Problem statement is here: http://acm.timus.ru/problem.aspx?space=1&num=1613
Tag: Medium
[Timus] Anansi’s Cobweb
Problem statement is here: http://acm.timus.ru/problem.aspx?space=1&num=1671
[Spoj] FRNDCIRC – Friend Circle
Problem statement is here: http://www.spoj.com/problems/FRNDCIRC/