Level 0. qr code

Level 0. qr code

 

 

#include <iostream>

using namespace std;

string solution(int q, int r, string code)
{
    string answer;

    for (int i = 0; i < code.length(); ++i)
        if (i % q == r)
            answer.emplace_back(code[i]);

    return answer;
}