PROGRAMMING:Print multi pyramid
This topic requires reading in two integers n and M. M represents the number of rows of the small pyramid and N represents the number of layers of the big Pyramid. Then output multi-layer pyramid.
###Input format:
The number of layers n in a row and the number of rows m in a small pyramid.
###Output format:
For each group of input, the corresponding pattern is displayed
###Input example:
Here is a set of inputs. For example:
```in
2 3
```
###Output example:
The corresponding output is given here. For example:
```out
*
***
* *
*** ***
```
answer：If there is no answer, please comment
###Input format:
The number of layers n in a row and the number of rows m in a small pyramid.
###Output format:
For each group of input, the corresponding pattern is displayed
###Input example:
Here is a set of inputs. For example:
```in
2 3
```
###Output example:
The corresponding output is given here. For example:
```out
*
***
* *
*** ***
```
answer：If there is no answer, please comment