count a

#include <iostream>
#include <string>

using namespace std;

// Complete the repeatedString function below.
long repeatedString(string s, long n)
{
    long num_a{0};
    long len = s.length();
    long total = len;

    for (char a : s)
        num_a = (a == 'a')? num_a + 1 : num_a;

    long max_repeats{n / len};

    num_a *= max_repeats;
    total *= max_repeats;


    if (n % len == 0)
        return num_a;

    for (int i = 0; i < len && total < n; i++, total++)
    {
        if (s[i] == 'a')
            num_a++;
        if (i == len)
            i = 0;
    }

    return num_a;
}