while 1:
  n=int(input())
  if not n:break
  f=1
  L={}
  for a,b,c in [map(int,input().split()) for i in range(n)]:
    a=str(a)
    if a in L:
      d=b*c
      if L[a]>=1e6:continue
      L[a]+=d
    else:L[a]=d
    if L[a] >= 1e6:
      print(a)
      f=0
  if f:print('NA')