N = int(raw_input())
dic = {}
for i in range(N):
    n, p, q = map(int, raw_input().split())
    if not n in dic:
        dic[n] = [i,p*q]
    else:
        dic[n][1] = dic[n][1]+p*q
        
lis = [(v[0], k) for k, v in dic.items() if v[1] >= 1000000]
if lis:
    for t in sorted(lis, key=lambda x: x[0]):
        print t[1]
else:
    print 'NA'