import sys def query(p): print(p[0],p[1]) sys.stdout.flush() return int(input()) #count,x,y used = [False for i in range(100000+1)] p = [0,0] res = query(p) find = False for i in range(100): div=res//2 data=[[p[0]+res,p[1]],[p[0],p[1]+res],[p[0]+div,p[1]+res-div],[p[0]+res-div,p[1]+div]] ret = [10**9+7,10**9+7,10**9+7,10**9+7] for j in range(4): ret[j] = query(data[j]) if ret[j]==0: find=True break if find: break minIndex = 0 for j in range(4): if ret[minIndex] > ret[j]: minIndex=j p=data[minIndex]