#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;

int N, S;
ll A[1010], sum[1010];

int main() {
  cin >> N;
  cout << "? " << 2 << " " << N << endl;
  cin >> S;
  A[1] = N * (N + 1) / 2 - S;
  sum[1] = A[1];
  for (int k = 2; k <= N - 1; k++) {
    cout << "? " << k - 1 << " " << k << endl;
    cin >> S;
    A[k] = S - A[k - 1];
    sum[k] = sum[k - 1] + A[k];
  }
  A[N] = N * (N + 1) / 2 - sum[N - 1];
  cout << "!";
  for (int i = 1; i <= N; i++) {
    cout << " " << A[i];
  }
  cout << endl;
  return 0;
}