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 Ruby (2.7.1) (judge verdict: Runtime Error)

len = gets.to_i
flag =true
line = gets.split(' ').map(&:to_i)
i=0
ans = 1 
while i<len
    ans *= line[i]
    if ans > 1000000000000000000 then 
        p -1
        flag = false
        break
    end
    i+=1
end

if flag then
    p ans
end