while True:
    n = int(input())
    if n == 0:
        break

    rs = {}
    for i in range(n):
        cid, p, q = map(int, input().strip().split(' '))
        rs[cid] = (rs.get(cid, None) or 0) + p * q

    top = [k for k, v in rs.items() if v >= 1000000]
    if len(top) == 0:
        print('NA')
    else:
        for i in top:
            print(i)