You are given two integers A and B. Calculate their sum and output it without leading zeros.

Input

Two lines of input data contain integers A and B (1 ≤ A, B ≤ 105).

Output

Output A + B without leading zeros.

Examples

Input

12
3


Output

15


Input

100
5


Output

105

Note

The code provided in the post about the round doesn't solve the task.

Source: codeforces | Difficulty: MEDIUM_HARD


Solutions: