PROGRAMMING:Output the first n terms of Fibonacci sequence
Known Fibonacci sequence definition: F (0) = 0; f(1) = 1;
f(n) = f(n-1) + f(n-2);
Please calculate and output the first n (n < = 30) items of the sequence.
###Input format:
Input a positive integer n (n < = 30), the value of N in the program do not need to judge, input attention can.
###Output format:
Output series values, data separated by commas, that is, each data with a comma output.
###Input example:
```in
twenty-six
```
###Output example:
```out
0,1,1,2,3,5,8,13,21,34,55,89,144,233,377,610,987,1597,2584,4181,6765,10946,17711,28657,46368,75025,
```
answer：If there is no answer, please comment
f(n) = f(n-1) + f(n-2);
Please calculate and output the first n (n < = 30) items of the sequence.
###Input format:
Input a positive integer n (n < = 30), the value of N in the program do not need to judge, input attention can.
###Output format:
Output series values, data separated by commas, that is, each data with a comma output.
###Input example:
```in
twenty-six
```
###Output example:
```out
0,1,1,2,3,5,8,13,21,34,55,89,144,233,377,610,987,1597,2584,4181,6765,10946,17711,28657,46368,75025,
```
answer：If there is no answer, please comment