DWITE '11 R5 #2 - Unit rectangles

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Points: 3
Time limit: 2.0s
Memory limit: 64M

Problem type
DWITE Online Computer Programming Contest, December 2010, Problem 2

Rectangles can be constructed out of smaller squares. Given a supply of unit squares (1 \times 1 in size), how many unique rectangles can be constructed?

The input will contain 5 lines, each an integer 1 \le N \le 1\,000, a number of unit squares available.

The output will contain 5 lines, each a number of unique rectangles that can be constructed from up to N unit squares (not all squares have to be used for some of the rectangles).

Note: a rectangle is unique if another rectangle that had previously been constructed can't be rotated to look the same way. That is, 2 \times 3 and 3 \times 2 are considered to be the same.

Sample Input

2
6

Sample Output

2
8

Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0) Problem Resource: DWITE


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