// g++ 1.cpp -std=c++17 -O2 -I .
#include <bits/stdc++.h>
using namespace std;

using ll = long long;
using ld = long double;
 
using vi = vector<int>;
using vvi = vector<vi>;
using vll = vector<ll>;
using vvll = vector<vll>;
using vld = vector<ld>;
using vvld = vector<vld>;
using vst = vector<string>;
using vvst = vector<vst>;
 
#define fi first
#define se second
#define pb push_back
#define eb emplace_back
#define pq_big(T) priority_queue<T,vector<T>,less<T>>
#define pq_small(T) priority_queue<T,vector<T>,greater<T>>
#define all(a) a.begin(),a.end()
#define rep(i,start,end) for(ll i=start;i<(ll)(end);i++)
#define per(i,start,end) for(ll i=start;i>=(ll)(end);i--)
#define uniq(a) sort(all(a));a.erase(unique(all(a)),a.end())

//factorizeにも同じ関数があります

#include <initializer_list>

bool is_prime(long long x){
  using u128=__uint128_t;
  
  if(x==2||x==3||x==5||x==7)return true;
  if(x%2==0||x%3==0||x%5==0||x%7==0)return false;
  if(x<121){
    return x>1;
  }

  long long d = (x-1) >> __builtin_ctzll(x-1);
  long long one=1,minus_one=x-1;

  auto pow = [](long long x,long long n,long long mod){
    u128 res;
    x%=mod;
    if(n==0){
      res=1;return res;
    }
    res=1;
    u128 now=x;
    for(;n;n>>=1,now=(now*now)%mod){
      if(n&1){
        res=res*now%mod;
      }
    }
    return res;
  };

  auto ok = [&](long long a){
    auto y=pow(a,d,x);
    long long t=d;

    while(y!=one&&y!=minus_one&&t!=x-1){
      y=y*y%x;
      t<<=1;
    }

    if(y!=minus_one&&t%2==0)return false;
    return true;
  };

  if(x<(1ull<<32)){
    for(long long a:{2,7,61}){
      if(!ok(a))return false;
    }
  }
  else{
    for(long long a:{2,325,9375,28178,450775,9780504,1795265022}){
      if(x<=a)return true;
      if(!ok(a))return false;
    }
  }

  return true;
}

int main(){
  ios::sync_with_stdio(false);
  cin.tie(nullptr);

  cout<<"? 1"<<endl;
  int y;cin>>y;

  // if y = 0  : A + 1 = B
  // if y != 0 : A = y - 1, B = ? 

  if(y==0){
    cout<<"? 98"<<endl;
    int y2;cin>>y2;
    rep(a,0,100){
      if(97%(a+1)==y2){
        cout<<"! "<<a<<" "<<a+1<<endl;
        return 0;
      }
    }
  }
  else{
    per(i,100,1){
      if(is_prime(i+y-1)){
        cout<<"? "<<i<<endl;
        int y2;cin>>y2;
        rep(b,1,101){
          if((i+y-1)%b==y2){
            cout<<"! "<<y-1<<" "<<b<<endl;
            return 0;
          }
        }
      }
    }
  }
}