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)

import decimal
n = int(input())
a = list(map(int, input().split()))
ans = 1
if 0 in a:
  print(-1)
else:
  flag = True
  for i in a:
    ans *= i
    if ans > (10 ** 18):
      print(-1)
      flag = False
      break
  if flag:
    print(ans)