#include <cstdio>
#include <queue>
using namespace std;

const int sales = 1000000;

int main()
{
	int n;
	while(scanf("%d",&n),n) {
		bool flag[4000]={false};
		queue<int> employee_n;
		for(int i=0;i<n;++i) {
			int number,a,b;
			scanf("%d %d %d",&number,&a,&b);
			if(sales>a*b||flag[number-1]) continue;
			flag[number-1]=true;
			employee_n.push(number);
		}
		while(!employee_n.empty()){
			printf("%d\n",employee_n.front());
			employee_n.pop();
		}
		if(employee_n.empty()) puts("NA");
	}	
	return 0;
}