HackerRank Repeated String Solution

 Problem Link :https://www.hackerrank.com/challenges/repeated-string/problem

Solution in C++:

///La ilaha illellahu muhammadur rasulullah

///******Bismillahir-Rahmanir-Rahim******///

///Abul Hasnat  Tonmoy

///Department of CSE,23rd batch

///Islamic University,Bangladesh

#include <bits/stdc++.h>

using namespace std;

int main()

{

    long long n,cna=0,cna2=0,div,vs,i;

    string s;

    cin>>s>>n;

    cna=count(s.begin(),s.end(), 'a');

    div=n/s.size();

    vs=n%s.size();

    for(i=0; i<vs; i++)

    {

        if(s[i]=='a')

            cna2++;

    }

    cout<<cna*div+cna2<<endl;

}