while True:
    n = int(input())
    if n == 0:
        break
    id = []
    pq = [-1] * 4001
    for i in range(n):
        e,p,q = list(map(int,input().split()))
        if pq[e] < 0:
            id.append(e)
            pq[e] = p*q
        else: pq[e] += p*q
    
    f = False
    for e in id:
        if pq[e] >=1000000:
            print(e)
            f = True
    if not f:
        print("NA")
