int main(){
...
    int h[30005];
    bool taken[30005];
...
}

It is dangerous to put a such large array insize main().

Declare them as global variables.

http://codeforces.net/contest/141/submission/7691704 tried it.. doesn't help

I had made a mistake in the sort function. Did not make adjustments for the " = " case. Thnx anyways..!! :)