#include <bits/stdc++.h>
#include <chrono> 
 
using namespace std;
using namespace std::chrono; 
 
// #pragma GCC target ("avx2")
// #pragma GCC optimization ("O3")
// #pragma GCC optimization ("unroll-loops")
// #pragma optimization_level 3
// #pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
 
#define f0r(a, b) for (long long a = 0; a < (b); ++a)
#define f1r(a, b, c) for (long long a = (b); a < (c); ++a)
#define f0rd(a, b) for (long long a = (b); a >= 0; --a)
#define f1rd(a, b, c) for (long long a = (b); a >= (c); --a)
#define ms(arr, v) memset(arr, v, sizeof(arr))
#define pb push_back
#define send {ios_base::sync_with_stdio(false);}
#define help {cin.tie(NULL); cout.tie(NULL);}
#define fix(prec) {cout << setprecision(prec) << fixed;}
#define mp make_pair
#define f first
#define s second
#define all(v) v.begin(), v.end()
#define getunique(v) {sort(all(v)); v.erase(unique(all(v)), v.end());}
#define readgraph(list, edges) for (int i = 0; i < edges; i++) {int a, b; cin >> a >> b; a--; b--; list[a].pb(b); list[b].pb(a);}
#define ai(a, n) for (int ele = 0; ele < n; ele++) cin >> a[ele];
#define ain(a, lb, rb) for (int ele = lb; ele <= rb; ele++) cin >> a[ele];
#define ao(a, n) {for (int ele = 0; ele < (n); ele++) { if (ele) cout << " "; cout << a[ele]; } cout << '\n';}
#define aout(a, lb, rb) {for (int ele = (lb); ele <= (rb); ele++) { if (ele > (lb)) cout << " "; cout << a[ele]; } cout << '\n';}
#define vsz(x) ((long long) x.size())
typedef long long ll;
typedef double ld;
typedef long double lld;
typedef unsigned long long ull;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vpi;
typedef vector<pll> vpl;
 
template<typename A> ostream& operator<<(ostream &cout, vector<A> const &v);
template<typename A, typename B> ostream& operator<<(ostream &cout, pair<A, B> const &p) { return cout << "(" << p.f << ", " << p.s << ")"; }
template<typename A> ostream& operator<<(ostream &cout, vector<A> const &v) {
  cout << "["; for(int i = 0; i < v.size(); i++) {if (i) cout << ", "; cout << v[i];} return cout << "]";
}
template<typename A, typename B> istream& operator>>(istream& cin, pair<A, B> &p) {
  cin >> p.first;
  return cin >> p.second;
}
 
// mt19937 rng(steady_clock::now().time_since_epoch().count());
mt19937 rng(61378913);
/* usage - just do rng() */
 
void usaco(string filename) {
  // #pragma message("be careful, freopen may be wrong")
	freopen((filename + ".in").c_str(), "r", stdin);
	freopen((filename + ".out").c_str(), "w", stdout);
}
 
const lld pi = 3.14159265358979323846;
const ll mod = 1000000007;
// const ll mod = 998244353;
// ll mod;
 

 
ll n, m, k, q, l, r, x, y, z;
ll a[1000005];
ll b[1000005];
ll c[1000005];
string s, t;
ll ans = 0;
 
bool query(ll x) {
  cout << "? " << x << endl;
  char c; cin >> c;
  return c == 'Y';
}

ll getlength() {
  ll len = 1;
  ll cur = 1;
  while (len < 11) {
    cur = cur * 10;
    if (!query(cur)) break;
    ++len;
  }
  if (len != 11) return len;
  len = 1;
  cur = 9;
  while (1) {
    if (query(cur)) break;
    cur = cur * 10 + 9;
    ++len;
  }
  ll v = 1;
  f0r(i, len - 1) v *= 10;
  cout << "! " << v << endl;
  exit(0);
}

ll solvedig(ll start, ll l) {
  ll r = 10;
  while (l < r) {
    ll m = (l + r) / 2;

    if (query(start * 10 + m)) l = m + 1;
    else r = m;
  }
  return l - 1;
}
 
void solve(int tc) {
  ll len = getlength();

  ll v;
  if (len > 1) {
    v = solvedig(0, 1);

    f0r(i, len - 2) {
      v = v * 10 + solvedig(v, 0);
    }

    ll l = 0, r = 10;
    while (l < r) {
      ll m = (l + r) / 2;

      if (query(10 * (v * 10 + m))) r = m;
      else l = m + 1;
    }
    v = v * 10 + l;
  } else {
    v = 0;

    ll l = 0, r = 10;
    while (l < r) {
      ll m = (l + r) / 2;

      if (query(10 * (v * 10 + m))) r = m;
      else l = m + 1;
    }
    v = v * 10 + l;
  }

  cout << "! " << max(v, 1LL) << endl;
}
 
int main() {
  send help
 
  // usaco("cowland");
 
  int tc = 1;
  // cin >> tc;
  for (int t = 0; t < tc; t++) solve(t);
} 


Measured memory_bytes: 3712