vector<int> arr;
    stringstream newString(str);
    int n = 0;
    int size = str.size();
    for (int i = 0; i < size; i++) {
        if (str[i] == ',') {
            n++;
        }
    }

    for (int i = 0; i <= n; i++) {
        char ch;
        int a;
        newString >> a >> ch;
        arr.push_back(a);
    }
    
    return arr;