memo = {}
def query(x, y):
    if (x, y) in memo:
        return memo[(x, y)]
    print(x, y, flush=True)
    d = int(input())
    if d == 0:
        exit()
    memo[(x, y)] = d
    return d


yl = 0
yr = 10**5
while yl+2 < yr:
    y1 = (2*yl+yr)//3
    y2 = (yl+2*yr)//3
    if query(0, y1) <= query(0, y2):
        yr = y2
    else:
        yl = y1

minv = 10**18
ay = -1
for y in range(yl, yr+1):
    d = query(0, y)
    if d < minv:
        ay = y
        minv = d
ax = minv
query(ax, ay)