01. Gauss' Trick

#include <iostream>
#include <sstream>
#include <string>
#include <memory>

using namespace std;

int main() {
    string line;
    getline(cin, line);

    istringstream ss(line);

    unique_ptr<int[]> numbers = make_unique<int[]>(1000);

    int n, counter = 0;

    while (ss >> n) {
        numbers[counter++] = n;
    }

    for (int i = 0; i < counter / 2; i++) {
        cout << numbers[i] + numbers[counter - (1 + i)] << ' ';
    }

    if (counter % 2 == 1) {
        cout << numbers[counter / 2];
    }
    cout << endl;
    return 0;
}