#include <iostream>
#include <map>
#include <vector>
#include <algorithm>
using namespace std;

int main(){
	int n, No, unit, number;

	while( cin >> n , n ){
		map<int,int> employees;
		vector<int> vc;
		bool flag = false;
		for(int i=1 ; i<=4000 ; ++i ){
			employees[i] = 0;
		}
		
		for(int i=0 ; i<n ; ++i ){
			cin >> No >> unit >> number;
			if( count( vc.begin() , vc.end() , No ) == 0 ){
				vc.push_back( No );
			}
			employees[No] += unit * number;	
		}
		for(int i=0 ; i<vc.size() ; ++i ){
			if( employees[ vc[i] ] >= 1000000 ){
				cout << vc[i] << endl;
				flag = true;
			}
		}
		if( flag == false ){
			cout << "NA" << endl;
		}
	}
}