/* -*- coding: utf-8 -*-
 *
 * 2357.cc:  No.2357 Guess the Function - yukicoder
 */

#include<cstdio>
#include<algorithm>
 
using namespace std;

/* constant */

/* typedef */

/* global variables */

/* subroutines */

int query(int x) {
  printf("? %d\n", x); fflush(stdout);

  int r;
  scanf("%d", &r);
  return r;
}

/* main */

int main() {
  int r0 = query(100);
  int a, b;
  
  if (r0 == 99) {
    a = 99, b = 100;
  }
  else {
    int r1 = query(99 - r0);
    b = r1 + 1;
    a = r0 - 100 % b;
    if (a < 0) a += b;
  }

  printf("! %d %d\n", a, b); fflush(stdout);
  return 0;
}