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 JavaScript (Node.js 12.16.1) (judge verdict: Wrong Answer)

function Main(input) {
	var str = input;
	var ans = 1;
	var count = 1;
	var str = str.split("\n");
	var a = Number(str[0].split(" ")[1]);
	for(var i = 0;i<a.length;i++){
		a[i]=Number(a[i]);
		ans = ans *a[i];
	}
	if(ans > 10**18){
		ans = -1;	
	}
	console.log(ans);
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));