Graph problem time limit

hi...
i tried solving a few graph problems in a programming site
all of them exceeding the required time limit..(though i used standrd algotithms)
may be cos of the the time for graph construction...
i implemented adjacency linked list using structs and pointers....

how will i improvise

Dunno, if you don't post your code, we can't tell you how to improve it.
And no, this isn't an invite for you to PM me your code either.

No, instead I got a PM that I only just answered to with a "I do not solve problems via PM".

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Mats