vector<int> parseInts(string str) {
    char ch;
    int next_int;
    stringstream ss(str);
    vector<int> integers = vector<int>();
    
    ss >> next_int;
    integers.push_back(next_int);
    
    while (ss >> ch) {
        ss >> next_int;
        integers.push_back(next_int);
    }
    
    return integers;
}