while True:
    n = int(input())
    if n == 0:
        break
    save_list=[0]*4001
    display_list = []
    for i in range(n):
        a,b,c =  map(int, input().split())
        save_list[a] += b * c
        if a not in display_list:
            display_list.append(a)
    ans = []
    for i in display_list:
        if save_list[i] >= 1000000:
            ans.append(i)
    if not ans:
        print("NA")
    else:
        for i in ans:
            print(i)
