while 1:
    n=int(input())
    if n==0:break
    count=0
    member=[0]*4001
    mem_check=[]
    mem_check2=[]
    for i in range(n):
        e,p,q=map(int,input().split())
        member[e]+=p*q
        mem_check.append(e)
    for i in mem_check:
        if not(i in mem_check2):
            if member[i]>=1000000:
                print(i)
                count+=1
                mem_check2.append(i)
    if count==0:
        print("NA")
