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

int main(){
	int n,num,mn,nm,mon;
	while(cin >> n,n){
		int c=0,sc[4001],cn=0,cc=0;
		map<int,int> maps;
		for(int i=0;i<n;i++){
			int cnt=0,j=0;
			cin >> num >> mn >> nm;
			mon = mn*nm;
			maps[num] += mon;
			for(;j<c;j++){
				if(sc[j]==num)cn++;
			}
			if(cn==0||j==0){
				sc[c] = num;
				c++;
				//cout << sc[c] << endl;
			}
		}
		for(int i=0;i<c;i++){
			if(maps[sc[i]]>=1000000){
				cout << sc[i] << endl;
				cc++;
			}
		}
		if(cc==0) cout << "NA" << endl;
	}
	return 0;
}