- Time limit: 1.00 s
- Memory limit: 512 MB
Your task is to calculate the value at square $(y,x)$.
Input
The only input line contains two integers $y$ and $x$.
Output
Print one integer: the value at square $(y,x)$.
Constraints
- $1 \le y,x \le 10^9$
Input:
3 5
Output:
6