Ok,i have got my solutions.I describe those here if it helps any newcomer like me..:)
1. ACM problems should be found in this link..
http://uvatoolkit.com/problemssolve.php[
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2. Programming language should be C,C++ or Java.
3. For coding Codeblock may be good one(for my case).
4. For submitting a solution we need to go this link..
http://uva.onlinejudge.org/[
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Here an account would be needed to submit a solution.