#include <bits/stdc++.h>

using namespace std;

typedef pair<int, int> pii;
typedef pair<int, pair<int, int> > piii;
typedef long long ll;
const int N = 2000086, MOD = 998244353, INF = 0x3f3f3f3f;
ll res;
int n, m, cnt, w[N], v1, v2;


int ask(int x) {
    printf("? %d\n", x);
    fflush(stdout);
    scanf("%d", &x);
    return x;
}

int main() {
    int b = ask(0);
    int a = ask(1) - b;
    printf("! %d %d\n", a, b);
    fflush(stdout);
    return 0;
}