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)

N=gets.to_i
a = gets.chomp.split.map(&:to_i)
p=[-1,a[0]]
s=1
i=1
while i < N &&(s==1)
 if a[i]==0
    p[1]=0
 end
p[1]=p[1]*a[i]
  if p[1]>10**18
     s=0
  end
i=i+1
end
puts p[s]