#include<stdio.h>
int main(void){
	int n,i,number,price,howmany;
	long long int score[4001];
	scanf("%d",n);
	while(n!=0){
		count
		for(i=0; i<=4000; i++){
			score[i]=0;
		}
		for(i=0; i<n; i++){
			scanf("%d%d%d",number,price,howmany);
			score[number]+=price*howmany;
		}
		for(i=1; i<=4000; i++){
			if(score[i]>=1000000){
				printf("%lld\n",i+1);
				score[0]++;
			}
		}
		if(score[0]==0){
			printf("NA\n",i+1);
		}
		scanf("%d",n);
	}
}