for (int i = 0; i < ansNums.size(); i++) {
        if (i <= operators.size()) {
            if (operators[i] == "+") {
                out += ansNums[i];
            } else if (operators[i] == "-") {
                out -= ansNums[i];
            }
        } else {
            if (operators[i-1] == "+") {
                out += ansNums[i];
            } else if (operators[i-1] == "-") {
                out -= ansNums[i];
            }
        }
    }