from heapq import heappop, heappush

n=int(input())

debug=0
def f(x):
  return str(x//10)+str(x%10)

import random
S=[[1]*1440 for i in range(n)]
cnt=[0]*n
if debug:
  for i in range(n):
    left=i
    
    for j in range(720):
      S[i][(left+j)%1440]=0

now_time=0
def ask(t,p):
  global now_time
  #print(t)
  #assert t>=now_time
  now_time=t
  assert t<1440
  if debug:
    cnt[p]+=1
    return S[p][t]
  h=t//60
  m=t%60
  print("at "+f(h)+":"+f(m)+" check "+str(p+1),flush=True)
  s=input()
  if s=="asleep":
    return 0
  else:
    return 1

hq=[]
for i in range(n):
  t0=ask(0,i)
  #heappush(hq,(0,i,45,t0))
  heappush(hq,(45,i,45,t0))

ans=[0]*n

while hq:
  time,idx,state,t0=heappop(hq)
  if state!=-1:
    t=ask(time,idx)
    if t==t0:
      heappush(hq,(time+state-1,idx,state-1,t0))
    else:
      heappush(hq,(720+time-state,idx,-1,t0))
  else:
    if time==1440:
      t=t0
    else:
      t=ask(time,idx)
    if t!=t0:
      heappush(hq,(time+1,idx,-1,t0))
    else:
      if t0==0:
        ans[idx]=f((time//60)%24)+":"+f(time%60)
      else:
        h=(time//60)+12
        h%=24
        ans[idx]=f(h)+":"+f(time%60)

print("answer",flush=True)
for idx in range(n):
  i=ans[idx]
  print(i,flush=True)
  if debug:
    h,w=i.split(":")
    time=int(h)*60+int(w)
    assert S[idx][time]==0 and S[idx][time-1]==1

if debug:
  print(cnt)
  print(max(cnt))