HackerRank - Solution to "Simple Array Sum" in JavaScript

Below is my solution to the HackerRank "Simple Array Sum" challenge. In order to pass the tests, you'll need to iterate through the array of integers and sum them up. I chose to do this using the reduce method. You'll then need to print the resulting sum to the console.

function main() {  
    let n = parseInt(readLine()),
        arr = readLine().split(' ').map(Number),
        sum = arr.reduce(function(acc, number) {
            return acc + number;
        }, 0);

    console.log(sum);

    return sum;
}