290_B. QR code
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Input

The input contains two integers a1, a2 (0 ≤ ai ≤ 32), separated by a single space.

Output

Output a single integer.

Examples

Input

1 1


Output

0


Input

3 7


Output

0


Input

13 10


Output

1
```python
num = input().split()
print(int(num[0]) + int(num[1][::-1]))

```