Problem:
Score : 100 points

Problem Statement

Compute A \times B.

Constraints

1 \leq A \leq 100

1 \leq B \leq 100

All values in input are integers.

Input

Input is given from Standard Input in the following format:

A B

Output

Print the value A \times B as an integer.

Sample Input 1

2 5

Sample Output 1

10

We have 2 \times 5 = 10.

Sample Input 2

100 100

Sample Output 2

10000

Solution in Fortran (GNU Fortran 9.2.1) (judge verdict: Runtime Error)

program mondai2
implicit none
integer*8 i, n, b
integer*8 a(100000)
b = 1
i = 1
read(*,*) n
read(*,*) (a(i), i=1,n)
i = 1
do while (i<=n)
  b = b * a(i)
  i = i + 1
end do
if (b / 10.0 ** 18.0 > 1) then
  b = -1
end if
write(*,*) b
end program mondai2