import sys
input=lambda: sys.stdin.readline().rstrip()
import random
import sys
def ran(x):
  ret=""
  for _ in range(x):
    ret+=str(random.randrange(10))
  return ret

while True:
  cur=ran(10)
  print(cur,flush=True)
  ct,res=map(str,input().split())
  if ct=="10":
    sys.exit
  elif ct=="0":
    zero=cur
    break
  else:
    continue

ans=""
for i in range(10):
  for j in range(10):
    print(zero[:i]+str(j)+zero[i+1:],flush=True)
    ct,res=map(str,input().split())
    if ct=="0":
      continue
    else:
      ans+=str(j)
      break
print(ans,flush=True)