(The ACM training materials I have used are okay, you can take a look!
ACM training special e-book\ACM topic classification.doc
ACM training special e-book\Basic training questions.doc
ACM Training Special eBook\Chapter 2 Recursion and Divide and Conquer Strategies.pdf
ACM training dedicated e-book\Chapter 3 Dynamic Solutions.pdf
ACM training dedicated e-book\Chapter 3 Dynamic Scheme 2.pdf
ACM Training Special eBook\Chapter 4 Greedy Algorithms.pdf
ACM Training Special eBook\Chapter 5 Backtracking.pdf
ACM Training Special eBook\Chapter 6 Branch and Bound Method.pdf
.....too many files .....)