#include <bits/stdc++.h>
using namespace std;

int main()
{
	int N, s = 0;
	cin >> N;
	vector<int> S( N - 1 ), a( N );
	cout << "? " << 1 << " " << 2 << endl;
	cin >> S[0];
	s += S[0];
	cout << "? " << 2 << " " << N << endl;
	cin >> S[1];
	s += S[1];
	for( int i = 2; i < N - 1; i++ ) {
		cout << "? " << i << " " << i + 1 << endl;
		cin >> S[i];
	}
	int all = N * (N + 1) / 2;
	a[1] = s - all;
	a[0] = S[0] - a[1];
	for( int i = 2; i < N - 1; i++ ) a[i] = S[i] - a[i - 1];
	s = 0;
	for( int i = 1; i < N - 1; i++ ) s += a[i];
	a[N - 1] = S[1] - s;
	cout << "!";
	for( int i = 0; i < N; i++ ) cout << " " << a[i];
	cout << endl;
}