#include <iostream>
#include <map>
#include <functional>
using namespace std;

int main()
{
    while(1)
    {
        int n;
        cin>>n;
        if(n==0) return 0;
        multimap< int,int,greater<int> > sr;
        for(int i=0;i<n;++i)
        {
            int sn,p,q;
            cin>>sn>>p>>q;
            sr.insert(make_pair(sn,p*q));
        }
        multimap<int,int>::iterator it=sr.begin();
        do{
            if(it==sr.begin()&&(*it).second<1000000) {
                cout<<"NA"<<endl;  break;
            }
            cout<<(*it).first<<endl;
            ++it;
        }while((*it).second>=1000000);
    }
}