Yesterday I read BFS for first time. I knew before DFS,and I had use it in 10+ problems,so it was a bit easier to undestand BFS. After of much time of reading(editorial) and effort,I undestood the solution of this: "Inviational 02 Semifinal Room 2 — Div 1 500 — Escape",problem from topcoder,and I solved it. But I saw that in topcoder tutorial,has not other bfs problems. Could you link me one more BFS problem down,that his difficulty is almost same with the above problem?

(I googled it,but in my results,I did not find the level of each problem,so I couldnt know,if I am suitable to solve that.)

Thank you for your time, and sorry if my english is a bit meaningless :P !!!

Hello! You can always try problem from UVa OJ, there are so many BFS problems there :P

Yea,I saw that,but there is any way to see the difficulty level of each problem,so to know before try that,if it is suitable for me?

DFS & BFS & DIKSTRA : http://ahmed-aly.com/Category.jsp?ID=13 BFS : http://ahmed-aly.com/Category.jsp?ID=76 ALL PROBLEMS : http://ahmed-aly.com/Categories.jsp Difficulty is at right in each category