#include<iostream>
#include<vector>
#include<cstring>

long long owData[4001];
std::vector<int> used;

int main(){
  long long x,input[3];
	bool Person;
	while( std::cin>>x , x ){
		Person=false;
		used.clear();
		memset(owData,0,sizeof(owData));
		while( x-- ){
			std::cin>>input[0]>>input[1]>>input[2];
			if( owData[input[0]] == 0 )used.push_back(input[0]);
			owData[input[0]]+=input[1]*input[2];
		}
		for(auto it = used.begin(); it != used.end(); ++it ){
			if( owData[*it] >= 1000000 )
				std::cout<< *it <<std::endl, Person=true ;
		}
		if(!Person)std::cout<<"NA"<<std::endl;
	}
	return 0;
}