#include <cstdio>

int const N = 1000;
int getY() {
  int l = 0;
  int r = N + 1;
  while (l < r - 1) {
    int mid = (l + r) >> 1;
    printf("? %d %d\n", 0, mid);
    fflush(stdout);
    int c = getchar();
    while (c != 'Y' && c != 'N') {
      c = getchar();
    }
    if (c == 'Y') {
      l = mid;
    } else {
      r = mid;
    }
  }
  return l;
}

int getX(int y) {
  int l = 0;
  int r = N + 1;
  while (l < r - 1) {
    int mid = (l + r) >> 1;
    printf("? %d %d\n", mid, y);
    fflush(stdout);
    int c = getchar();
    while (c != 'Y' && c != 'N') {
      c = getchar();
    }
    if (c == 'Y') {
      l = mid;
    } else {
      r = mid;
    }
  }
  return l;
}

int main() {
  int sq = 2 * getX(0);
  int y = getY();
  int triangle = getX(sq);
  printf("! %d\n", sq * sq + triangle * (y - sq));
}