PROGRAMMING:Calculate the sum of two numbers

Calculate the sum of two numbers.
Assign values to variables A and B through keyboard, then calculate the sum of variables A and B, assign the sum to variable sum, and finally output the value of variable sum;
requirement:
###Input format:
Enter two integers
###Output format:
The sum of two numbers
###Input example:
Here is a set of inputs. For example:
```in
2 8
```
###Output example:
The corresponding output is given here. For example:
```out
ten
```







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