PROGRAMMING:Positive integer a + B

The goal of the problem is very simple, that is to find the sum of two positive integers' a 'and' B ', where' a 'and' B 'are in the interval [11000]. The slightly troubling thing is that the input is not guaranteed to be two positive integers.
###Input format:
The input is given 'a' and 'B' on one line, separated by spaces. The problem is that 'a' and 'B' are not necessarily positive integers that meet the requirements. Sometimes they may be out of range numbers, negative numbers, real numbers with decimal points, or even a bunch of random codes.
Note: we regard the first space in the input as the separation of 'a' and 'B'. The title is guaranteed to have at least one space and 'B' is not an empty string.
###Output format:
If the input is indeed two positive integers, output in the format 'a + B = and'. If an input does not meet the requirements, output '?' at the corresponding position, Obviously at this time and also '?'.
###Input sample 1:
```in
123 456
```
###Output sample 1:
```out
123 + 456 = 579
```
###Input example 2:
```
22. 18
```
###Output example 2:
```
? + 18 = ?
```
###Input sample 3:
```
-100 blabla bla...33
```
###Output example 3:
```
? + ? = ?
```






answer：If there is no answer, please comment