6.9

#include <iostream>
#include <vector>
using namespace std;

int main() {
    vector<int> numbers;
    int num;

    while (true) {
        cin >> num;
        if (num < 0) {
            break;
        }
        numbers.push_back(num);
    }

    if (numbers.size() > 9) {
        cout << "Too many numbers" << endl;
    } else {
        int middleIndex = numbers.size() / 2;
        cout << "Middle item: " << numbers[middleIndex] << endl;
    }

    return 0;
}