Multiplication of Big Integers

Given two integers $A$ and $B$, compute the product, $A \times B$.

Input

Two integers $A$ and $B$ separated by a space character are given in a line.

Output

Print the product in a line.

Constraints

* $-1 \times 10^{1000} \leq A, B \leq 10^{1000}$



Sample Input 1


5 8


Sample Output 1


40


Sample Input 2


100 25


Sample Output 2


2500


Sample Input 3


-1 0


Sample Output 3


0


Sample Input 4


12 -3


Sample Output 4


-36






Example

Input

5 8


Output

40
import sys

z=list(map(int,input().split()))
print(z[0]*z[1])
