Problem:
Sale Result

There is data on sales of your company. Your task is to write a program which identifies good workers.

The program should read a list of data where each item includes the employee ID i, the amount of sales q and the corresponding unit price p. Then, the program should print IDs of employees whose total sales proceeds (i.e. sum of p × q) is greater than or equal to 1,000,000 in the order of inputting. If there is no such employees, the program should print "NA". You can suppose that n < 4000, and each employee has an unique ID. The unit price p is less than or equal to 1,000,000 and the amount of sales q is less than or equal to 100,000.

Input

The input consists of several datasets. The input ends with a line including a single 0. Each dataset consists of:

n (the number of data in the list)
i p q
i p q
:
:
i p q

Output

For each dataset, print a list of employee IDs or a text "NA"

Sample Input

4
1001 2000 520
1002 1800 450
1003 1600 625
1001 200 1220
2
1001 100 3
1005 1000 100
2
2013 5000 100
2013 5000 100
0

Output for the Sample Input

1001
1003
NA
2013

Solution in Python3 (judge verdict: Accepted)

def solve():
    N = int(input())
    if N == 0:
        return False
    E = []
    D = {}
    for i in range(N):
        e, p, q = map(int, input().split())
        E.append(e)
        D[e] = D.get(e, 0) + p*q
    cnt = 0
    for e in E:
        if D.get(e, 0) >= 1000000:
            print(e)
            del D[e]
            cnt += 1
    if cnt == 0:
        print("NA")
    return True
while solve():
    ...