#include <iostream>
#include <map>
using namespace std;
int main()
{
	while(1)
	{
		int n; cin >> n ;
		if(!n) break;
		map<int,long long> a;
		for(int i=0;i<n;i++)
		{
			long num,b,c;
			cin >> num >> b	>> c ;
			a[num]+=(long long) b*c;
		}
		map<int,long long>::iterator p;
		bool flag=false;
		for(p=a.begin(); p!=a.end();p++)
			if(p->second >= 1000000) {cout << p->first << endl; flag=true;}
		if(flag==false) cout << "NA" << endl;
	}
}