#include<bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(n);i++)
#define loop(i,x,n) for(int i=(x);i<(n);i++)
#define all(x) (x).begin(),(x).end()
#define pb push_back
#define mp make_pair
#define fir first
#define sec second
#define ub upper_bound
#define lb lower_bound
#define int long long
using namespace std;
const int MOD=1000000007;
const int INF=1000000009;



signed main(){
  int n;
  while(cin>>n,n){
    int a,b,c;
    map<int,int> M;
    bool k=false;
    rep(i,n){
      cin>>a>>b>>c;
      M[a]+=b*c;
    }
    for(auto itr:M){
      if((itr.sec)>=1000000){
        cout<<(itr.fir)<<endl;
        k=true;
      }
    }
    if(k==false)cout<<"NA"<<endl;
  }
  return 0;
}