Viral Advertising

Solution in Javascript 

const n = 3;

function viralAdvertising(n) {
    let k = 5;
    let j = 0;
    let sum = 0;

    for(let i = 0; i < n; i++){
        j = Math.floor(k/2);
        k = j * 3;
        sum+=j;
    }

    console.log(sum);
}

viralAdvertising(n);

 

 

*Use Math.floor() to get quotient.

 

 

 

 

Reference

www.hackerrank.com/challenges/strange-advertising/problem