Multiplication of Big Integers

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

inputFormat

Input

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

outputFormat

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

样例

5 8

40