PROGRAMMING:Reverse order output

In the first line, enter n (n < = 100), and then enter n numbers;
Ask you to reverse the output, every two numbers between a space;
###Input format:
In the first line, enter n (n < = 100), and then enter n numbers;
###Output format:
Ask you to reverse the output, every two numbers between a space;
###Input example:
Here is a set of inputs. For example:
```in
three
1 2 3
```
###Output example:
The corresponding output is given here. For example:
```out
3 2 1
```







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