CSES - E4590 2019 0 - A + B
  • Time limit: 5.00 s
  • Memory limit: 512 MB

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

Input

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

Output

Output a single integer A+BA+B.

Constraints

  • 106A,B106-10^6 \le A,B \le 10^6

Examples

Input:

3 5

Output:

8

Input:

-6 4

Output:

-2