import sys
import random
from bisect import bisect_left as lb
from bisect import bisect_right as rb
from collections import deque
from queue import PriorityQueue as pq
from math import gcd
input_ = lambda: sys.stdin.readline().strip("\r\n")
ii = lambda : int(input_())
il = lambda : list(map(int, input_().split()))
ilf = lambda : list(map(float, input_().split()))
lii = lambda : list(map(int, list(ip())))
ip = lambda : input_()
fi = lambda : float(input_())
ap = lambda ab,bc,cd : ab[bc].append(cd)
li = lambda : list(input_())
pr = lambda x : print(x)
prinT = lambda x : print(x)
f = lambda : sys.stdout.flush()
inv =lambda x:pow(x,mod-2,mod)
dx = [0,0,1,-1]
dy = [1,-1,0,0]
mod = 10**9 + 7
mod1 = 998244353
for _ in range (ii()) :
x = 0
for i in range (30) :
print('?',(1<<i) - x,(3<<i) - x)
f()
t = ii()
if ((t>>i)&1 == 0) :
x += (1<<i)
print('!',x)
f()
#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef long double ld;
const ll M = 1e9 + 7;
/*
*** **************
*** **************
*** ***
*** ***
*** ***
*************************
*************************
*** ***
*** ***
*** ***
************** ***
************** ***
*/
#define v(li) vector<ll>
#define vp(li) vector<pair<ll, ll>>
#define m(li) map<ll, ll>
#define s(li) set<ll>
#define f(i, n) for (ll i = 0; i < n; i++)
#define f1(i, n) for (ll i = 1; i < n+1; i++)
#define test(t) while (t--)
#define w(i, n) while (i < n)
#define prs(n) cout << n << " "
#define prn(n) cout << n << " "
#define newl cout << "\n"
#define pb(a) push_back(a);
#define pop pop_back()
#define in(x) insert(x)
#define fsort(v) sort(v.begin(), v.end())
#define rsort(v) sort(v.begin(), v.end(), greater<ll>())
#define rev(v) reverse(v.begin(), v.end())
#define max_ele(v) *max_element(v.begin(), v.end())
#define min_ele(v) *min_element(v.begin(), v.end())
ll binexp(ll a, ll b)
{
if (b == 0)
return 1;
ll res = binexp(a, b / 2);
if (b % 2 == 0)
return res * res;
else
return a * res * res;
}
ll biexm(ll a, ll b)
{
if (b == 0)
return 1;
ll res = biexm(a, b / 2);
if (b % 2 == 0)
return ((res % M) * (res % M)) % M;
else
return ((((res % M) * (res % M)) % M) * (a % M)) % M;
}
ll hcf(ll a, ll b)
{
if (a % b == 0)
return b;
return hcf(b, a % b);
}
ll lcm(ll a,ll b){
return (a*b)/(hcf(a,b));
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
/* Sieve */
// ll N=1e6;
// ll spf[N+1];
// f(i,N+1) spf[i]=i;
// for(ll i=2;i<N+1;i++){
// if(spf[i]==i){
// for(ll j=i*i;j<N+1;j+=i){
// spf[j]=i;
// }
// }
// }
// ll N=1e6;
// bool isprime[N+1];
// f1(i,N) isprime[i]=true;
// isprime[1]=false;
// for(ll i=2;i<N+1;i++){
// if(isprime[i]){
// for(ll j=i*i;j<N+1;j+=i) isprime[j]=false;
// }
// }
// vector<ll> primes;
// for(ll i=2;i<N+1;i++) if(isprime[i]) primes.push_back(i);
/* Code Starts here */
ll t;
cin >> t;
test(t)
{
ll b=(1LL<<30);
ll num=0;
for(ll i=0;i<30;i++){
ll r=(1LL<<i)-num;
cout<<"? "<<r<<" "<<b+r<<"\n";
ll q=(1LL<<i);
cout.flush();
ll x;
cin>>x;
if(x>q) num+=q;
}
cout<<"! "<<num<<"\n";
cout.flush();
}
return 0;
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