#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <math.h>
#define REP(i, n) for (ll i = 0; i < n; i++)
#define REP1(i, n) for (ll i = 1; i <= n; i++)
#define RREP(i, n) for (ll i = n - 1; i >= 0; i--)
#define RREP1(i, n) for (ll i = n; i >= 1; i--)
#define FOR(i, a, b, c) for (ll i = a; i <= b; i += c)
#define RFOR(i, a, b, c) for (ll i = a; i >= b; i -= c)
#define MAX(a, b) (a > b ? a : b)
#define MIN(a, b) (a < b ? a : b)
#define INF 1145141919
typedef long long ll;

int ask(int x, int y) {
    printf("%d %d\n", x, y);
    fflush(stdout);
    int d;
    scanf("%d", &d);
    if (d == 0) exit(0);
    return d;
}

int main() {
    int ax, ay;
    int top = 0, tail = 1000000000;
    int d1, d2, asked = 0;
    while (true) {
        if (asked != 1) d1 = ask(top, 0);
        if (asked != 2) d2 = ask(tail, 0);
        if (d1 < d2) {
            tail = (top + tail) / 2;
            asked = 1;
        }
        else {
            top = (top + tail) / 2;
            asked = 2;
        }
        if (tail - top <= 2) {
            ax = d1 == d2 ? (tail + 1) : (d1 < d2 ? top : tail);
            break;
        }
    }
    ay = MIN(d1, d2);
    ask(ax, ay);
    return 1;
}