#include<iostream>
#include<string>
#include<cstdio>
#include<algorithm>
#include<stack>
#include<queue>
#include<vector>
#include<cmath>
#include<utility>
#include<set>
#include<complex>
#include<map>
#define vi vector<int>
#define vvi vector<vector<int> >
#define ll long long int
#define vl vector<ll>
#define vvl vector<vector<ll>>
#define vb vector<bool>
#define vc vector<char>
#define vs vector<string>
#define ld long double
#define INF 1e9
#define EPS 0.0000000001
#define rep(i,n) for(int i=0;i<n;i++)
#define loop(i,s,n) for(int i=s;i<n;i++)
#define all(in) in.begin(), in.end()
#define MAX 9999999
using namespace std;
typedef pair<int, int> pii;
typedef pair<double,double>pdd;
typedef pair<ll,ll>pll;
#define int ll
signed  main(){
    int n;
    while(cin>>n,n){
        map<int,int>mp;
        rep(j,n){
            int a,b,c; cin>>a>>b>>c;
            mp[a]+=b*c;
        }
        bool flag=false;
        for(auto itr=mp.begin();itr!=mp.end();itr++)
            if(mp[itr->first]>=1000000){flag=true;cout<<itr->first<<endl;}
        if(!flag)cout<<"NA"<<endl;
    }
}