divisible sum pairs(https://www.hackerrank.com/challenges/divisible-sum-pairs)

gistfile1.txt

function main() {
    var n_temp = readLine().split(' ');
    var n = parseInt(n_temp[0]);
    var k = parseInt(n_temp[1]);
    a = readLine().split(' ');
    a = a.map(Number);
    var result=0;
    for(var i=0; i<n; i++){
        for(var j=i+1; j<n; j++){
            if((a[i]+a[j])%k==0){
                result+=1;
            }
        }
    }
    console.log(result);
}