#include <cstdio>
#include <cstring>
#include <random>
#include <ctime>

std::mt19937 rnd(time(NULL));
int adjust(int x) {
	if (x <= 0) x = 0;
	else x = 1;
	return x;
}
int sum[1005][1005], real[1005][1005], buc[1005], n = 1000, m = 500;
int a[1005],ans[1005];
bool vis[1005][1005];
inline bool ask(int l, int r) {
	if (!vis[l][r]) {
		printf("? %d %d\n", l, r);
		fflush(stdout);
		scanf("%d", &sum[l][r]);
		vis[l][r] = true;
	}
	return sum[l][r];
}

int main() {
	for (int len = m - 1; len <= m; ++ len) {
		for (int i = 1; i + len - 1 <= n; ++ i) {
			memset(buc, 0, sizeof buc);
			int j = i + len - 1, major = 0;
			for (int k = i; k < j; ++ k) {
				ask(i, k), ask(k + 1, j);
				int val = sum[i][k] + sum[k + 1][j];
				if (val <= j - i + 1) {
					++ buc[val];
					if (buc[major] < buc[val]) major = val;
				}
				if (buc[major] > 3) break;
			}
			real[i][j] = major;
		}
	}
	printf("! ");
	for (int i = 1; i <= n; ++ i) {
		if (i <= n - m + 1) printf("%d", ans[i] = adjust(real[i][i + m - 1] - real[i + 1][i + m - 1]));
		else printf("%d", ans[i] = adjust(real[i - m + 1][i] - real[i - m + 1][i - 1]));
	}
	puts("");
	fflush(stdout);
	return 0;
}