#include <bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin>>n;
    cout<<"? 2 "<<n<<endl<<flush;
    int p1n;
    cin>>p1n;
    vector<int> p(n);
    p[0]=n*(n+1)/2-p1n;
    int sum=p[0];
    for(int i=2;i<=n-1;i++){
        cout<<"? "<<i-1<<" "<<i<<endl<<flush;
        int ss;
        cin>>ss;
        p[i-1]=ss-p[i-2];
        sum+=p[i-1];
    }
    p[n-1]=n*(n+1)/2-sum;
    cout<<"! ";
    for(int i=0;i<n;i++)cout<<p[i]<<" ";
    cout<<endl<<flush;
    return 0;
}