PROGRAMMING:Any natural number n greater than 1 can always be divided into the sum of several natural numbers less than n (assuming that the input value of n is 5).
This is a programming problem template. Please write the title description here. For example: this topic requires reading in 2 integers a and B, and then output their sum.
###Input format:
Please write the input format here. For example: input 2 integers a and B with absolute value no more than 1000 in one line.
###Output format:
Please describe the output format here. For example, for each group of inputs, output the value of a + B in one line.
###Input example:
Here is a set of inputs. For example:
```in
18 -299
```
###Output example:
The corresponding output is given here. For example:
```out
-281
```
answer：If there is no answer, please comment
###Input format:
Please write the input format here. For example: input 2 integers a and B with absolute value no more than 1000 in one line.
###Output format:
Please describe the output format here. For example, for each group of inputs, output the value of a + B in one line.
###Input example:
Here is a set of inputs. For example:
```in
18 -299
```
###Output example:
The corresponding output is given here. For example:
```out
-281
```
answer：If there is no answer, please comment