import sys
sys.setrecursionlimit(10000000)
MOD = 10 ** 9 + 7
INF = 10 ** 15

def ask(x,y):
    print(x,y,flush = True)
    d = int(input())
    if d == 0:
        exit()
    return d

d1 = ask(0,0)
d2 = ask(d1,0)
ask(d1 - d2//2,d2//2)