http://www.geeksforgeeks.org/increasing-subsequence-of-length-three-with-maximum-product/
Data Structure Array: Find the Increasing subsequence of length three with maximum product,布布扣,bubuko.com
Data Structure Array: Find the Increasing subsequence of length three with maximum product
原文：http://www.cnblogs.com/yingzhongwen/p/3655599.html
