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 C (GCC 9.2.1) (judge verdict: Wrong Answer)

#include<stdio.h>
int main(){
  int n;
  scanf("%d",&n);
  long long int a[1000000];
  long long int result=1;
  for(int i=0;i<n;i++){
    scanf("%lld",&a[i]);
    result=result*a[i];
  }
  if(result>1000000000000000000){
    printf("-1\n");
  }else{
    printf("%lld\n",result);
  }
  return 0;
}