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 Ruby (judge verdict: Accepted)

def norma (list)
  result = Array.new(0,nil)
  for l in list
    if (l['total'] >= 1000000)
      result.push(l)
    end
  end
  return result
end

def total (input, staff)
  staff['total'] = staff['total']+(input[1]*input[2])
end

def getS (num,staff)
  for n in staff
    if (n['id'] == num)
      n # => {"total"=>1040000, "id"=>1001}, {"total"=>1040000, "id"=>1001}
      return n
    end
  end
  return nil
end

n = gets.to_i
while n != 0
  list = Array.new(0,nil)
  n.times do |i|
    data_s = gets
    data = data_s.split(nil)
    data = data.map{|d| d.to_i}
    
    if (getS(data[0],list) != nil)
      staff = getS(data[0],list)
      total(data,staff)
    else
      staff = {"id"=>data[0], "total"=>0}
      total(data,staff)
      list.push(staff)
    end
  end
  
  result = norma(list)
  if result.size != 0
    for r in result
      puts r['id']
    end
  else
    puts "NA"
  end
  n = gets.to_i
end