PROGRAMMING:Fibonacci sequence
The general formula of Fibonacci sequence is as follows:

The program reads in integer n (40 > n > 2) and outputs the first n items of Fibonacci sequence.
###Input example:
```in
five
```
###Output example:
```out
1,1,2,3,5
```
###Input example:
```in
ten
```
###Output example:
```out
1,1,2,3,5,8,13,21,34,55
```
answer:If there is no answer, please comment

The program reads in integer n (40 > n > 2) and outputs the first n items of Fibonacci sequence.
###Input example:
```in
five
```
###Output example:
```out
1,1,2,3,5
```
###Input example:
```in
ten
```
###Output example:
```out
1,1,2,3,5,8,13,21,34,55
```
answer:If there is no answer, please comment