PROGRAMMING:Happy a + B

Input two integers a and B, and output their sum (| a | = $$10 ^ {10} $$, | B | = $$10 ^ {10} $$).
###Input format:
Enter a and B with a space between them
###Output format:
Output the value of a + B on one line.
###Input example:
```in
1 2
```
###Output example:
```out
three
```







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