PROGRAMMING:Primary school calculation problems

$$Keven $$defines $$f (n) = 1 + 3 + 5 +... + n $$. He needs you to calculate the value of $$f (n) \% 10007 $$（ Guarantee that $$n $$is odd)
$$\% $$means modulo, $$a \% B $$denotes the remainder of $$a / B $$, for example, $$7 \% 4 = 3,11 \% 5 = 1$$
###Input format:
Give a number in one line $$n$$
(guarantee that $$n $$is odd and that $$1 < = n < = 10000000000000000 $$)
###Output format:
Output a number on a line to represent the value of $$f (n) $
###Input example:
```in
five
```
###Output example:
```out
nine
```
###Tips:
$$ F(5) = 1+3+5$$







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