#include<iostream>

using namespace std;

int main(){
	bool tf = 0;
	int n,e,p,q;
	while(cin >> n){
		if(n == 0){
			break;
		}
		int r[4001]={0};
		tf = 0;
		for(int i = 0; i < n; i++){
			cin >> e >> p >> q;
			r[e] += p * q;
			//r[e] = r[e] + p*q;
		}
		for(int i = 1; i <= 4000; i++){
			if(r[i] >= 1000000){
				cout << i << endl;
				tf = 1;
			}
		}
		if(tf != 1){
				cout << "NA" << endl;
			}
	}
	
	return 0;
}