from collections import defaultdict as dd
while True:
    n=int(input())
    if n==0:
        break
    data=dd(int)
    for i in range(n):
        a,b,c=map(int,input().split())
        data[a]+=b*c
    f=False
    for i,j in data.items():
        if j>=1000000:
            print(i)
            f=True
    if not f:
        print("NA")