08. Invalid Input

#include <iostream>
#include <string>
#include <vector>

using namespace std;

int main() {
    string str, word = "", digit = "";
    getline(cin, str);
    str += ' ';
    int sumNumbers = 0;
    vector<string> words;

    for (int i = 0; i < str.length(); i++) {
        if (isdigit(str[i]) || str[i] == '-' && isdigit(str[i + 1])) {
            digit += str[i];
        }
        else if (str[i] != ' ') {
            word += str[i];
        }
        else {
            if (digit != "") {
                sumNumbers += stoi(digit);
                digit = "";
            }
            else {
                words.push_back(word);
                word = "";
            }
        }
    }

    cout << sumNumbers << endl;

    for (auto& w : words) {
        cout << w << ' ';
    }
    return 0;
}