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

int main(){
    int n;
    while(cin>>n,n){
        map<long,long long>m;
        int i,p,q,s=0;
        while(n--){
            cin>>i>>p>>q;
            m[i]+=p*q;
        }
        for (map<long,long long>::iterator it=m.begin(); it!=m.end(); ++it){
            if(it->second>=1000000){
                s=1;
                cout<<it->first<<endl;
            }
        }
        if(!s)cout<<"NA"<<endl;
    }
}