Given two numbers A and B, calculate their sum A+B.

Input

The first line of input consists of two space-separated numbers, A and B. Note that the numbers might be negative.

Output

Output a single integer A+B.

Constraints

• -10^6 \le A,B \le 10^6

Examples

Input:

3 5

Output:

8

Input:

-6 4

Output:

-2