#include <bits/stdc++.h>
using namespace std;
void solve() {
  long long int n;
  cin >> n;
  vector<long long int> ans(n);
  for (long long int i = 1; i < n; i++) {
    long long int val;
    cout << "? 1 " << i + 1 << endl;
    cin >> val;
    ans[i] = val;
  }
  cout << "? "
       << "2 3 " << endl;
  long long int val;
  cin >> val;
  ans[0] = ans[2] - val;
  for (long long int i = n - 1; i >= 1; i--) {
    ans[i] = ans[i] - ans[i - 1];
  }
  cout << "! ";
  for (auto& i : ans) {
    cout << i << " ";
  }
  cout << endl;
}
int32_t main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  long long int t = 1;
  while (t--) {
    solve();
  }
  return 0;
}
