import sys

lim = 10**5

def solve():
    btm = 0
    top = lim

    while btm != top:
        d = (top - btm) // 3

        print(0, btm + d, flush=True)
        a1 = int(input())

        if a1 == 0:
            return

        print(0, top - d, flush=True)
        a2 = int(input())

        if a2 == 0:
            return

        if d == 0:
            if a1 < a2:
                top -= 1
            else:
                btm += 1
        else:
            if a1 < a2:
                top = top - d
            else:
                btm = btm + d

    print(0, btm, flush=True)
    a = int(input())

    if a == 0: return

    print(a, btm, flush=True)
    a = int(input())

    return

if __name__ == '__main__':
    solve()