#include <bits/stdc++.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
using namespace std;

int sgn (int a) {
	return (a > 0) - (0 > a);
}

void interactor () {
	srand (time(NULL));
	
	int bound = (1 << 30);
	int a = rand() % bound;
	int b = rand() % bound;
	
	int asked_questions = 0;
	char type;
	int c, d;
	while (1) {
		cin >> type >> c >> d;
		asked_questions++;
		if ((type != '?'  &&  type != '!') ||  c < 0  ||  d < 0  ||  bound <= c  ||  bound <= d) {
			cerr << "Incorrect question." << endl;
			break;
		}
		
		if (type == '?') {
			if (asked_questions == 63) {
				cerr << "To many questions." << endl;
				break;
			}
			cout << sgn ((a ^ c) - (b ^ d)) << endl;
		}
		else {
			if (a == c  &&  b == d)
				cerr << "Correct solution." << endl;
			else
				cerr << "Incorrect solution." << endl;
			break;
		}
	}
}

int main () {
	char * que = "/tmp/que";
	char * ans = "/tmp/ans";
	mkfifo(que, 0777);
	mkfifo(ans, 0777);
	
	pid_t pid = fork();
	if (pid < 0)
		return 1;
	if (pid == 0) {
		int fd_read = open (ans, O_RDONLY);
		int fd_write = open (que, O_WRONLY);
		dup2 (fd_read, 0);
		dup2 (fd_write, 1);
		execl ("solution", "solution", NULL);
	}
	else {
		int fd_write = open (ans, O_WRONLY);
		int fd_read = open (que, O_RDONLY);
		dup2 (fd_read, 0);
		dup2 (fd_write, 1);
		
		interactor ();
	}
	unlink (que);
	unlink (ans);
	return 0;
}