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 Python (judge verdict: Accepted)

while 1:
    n = int(raw_input())
    if n == 0: break
    table = []
    index = {}
    for k in range(n):
        i, p, q = raw_input().split()
        record = index.get(i)
        if not record:
            record = [i, 0]
            table.append(record)
            index[i] = record
        record[1] += int(p) * int(q)
    found = False
    for record in table:
        if record[1] >= 1000000:
            print record[0]
            found = True
    if not found:
        print 'NA'