Sum (functions)

Implement the function:

integer solve(integer a, integer b)

• a — the first number;

• b — the second number;

• the function must return a single integer: the sum of the two numbers.

\InputFileTwo integers $a$ and $b$ (-10^{18} \leq a, b \leq 10^{18}) are given.

\OutputFileOutput a single integer: the sum of the two numbers.