#include<iostream>
#include<cstdio>
#include<algorithm>
#include<string>
using namespace std;
struct date{
    int num;
    int tanka;
    int uriage;
    long long int sum;
};
int main(){
	while(1){
        int n;
        cin >> n;
        if(n == 0) break;
        date a[5000] = {0};
        int number;
        for(int i = 0; i < n; i++){
            cin >> number;
            cin >> a[number].tanka >> a[number].uriage;
            a[number].sum += a[number].tanka * a[number].uriage;
        }
        bool flg = 0;
        for(int i = 1; i <= 4000; i++){
            if(a[i].sum >= 1000000) cout << i << endl,flg = 1;
        }
        if(!flg) cout << "NA" << endl;
	}
	return 0;
}