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 Python (3.8.2) (judge verdict: Runtime Error)

N = int(input()) #1行目のNを取得する
s_char = list(input().split())
s = [int(n) for n in s_char]
ans = 1

for num in s:
    if len(str(ans))+len(str(num))>20:
        #print('e')
        ans = -1
        break
    ans *= num
    if ans > 10**18:
        ans = -1
        break

for num in s:
    if num ==0:
        ans =0
        
print(ans)