#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<ll,ll>;
#define fix(x) fixed << setprecision(x)
#define asc(x) x, vector<x>, greater<x>
#define rep(i, n) for(ll i = 0; i < n; i++)
#define all(x) (x).begin(),(x).end()
template<class T>bool chmin(T&a, const T&b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool chmax(T&a, const T&b){if(a<b){a=b;return 1;}return 0;}

int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    int n, res;
    cin >> n;
    vector<int> a(n);
    a[0] = 0;
    rep(i,n-2){
        cout << "? " << 1 << " " << i+2 << endl;
        cin >> res;
        a[i+1] = res - a[i];
    }
    a[n-1] = n*(n+1)/2 - res;
    cout << "? " << 2 << " " << n << endl;
    cin >> res;
    a[0] = n*(n+1)/2 - res;
    a[1] -= a[0];
    cout << "! ";
    rep(i,n) cout << a[i] << " ";
    cout << endl;
    return 0;
}