#include <iostream>

using namespace std;

int main(){
	int n;
	int x[4001] = {0};
	int m[4001] = {0};
	
	while(1){
		int e, p, q, count = 0;
		cin >> n;
		if(n == 0) break;
		
		for(int i = 1; i <= n; i++){
			cin >> e >> p >> q;
			x[e] += p * q;
			if(x[e] >= 1000000){
				if(m[e] == 0){
					cout << e << endl;
					count++;
					m[e]++;
				}
			}
		}
		if(count == 0) cout << "NA" << endl;
	}
	
	return 0;
}