Estimate:Low
Explanation: The number of operations in each iteration of the outermost loop is about 512*512, which is greater than 2048.
The number of operations in each iteration of the middle loop is about 512*14, which is more than 2048.
The number of operations in each iteration of the innermost loop is about 14. However, the dependency depth is > 40 since temp is a cumulative sum.