#include <bits/stdc++.h>
int n;
int num[4000], tanka[4000], sale_num[4000];
int sale_all[4001], judge[4000];
int main(void) {
  int i, j, k;
  while (scanf("%d", &n), n != 0) {
    for (i = 0; i < n; i++) {
      scanf("%d %d %d", &num[i], &tanka[i], &sale_num[i]);
      sale_all[num[i]] = 0;
    }
    k = 0;
    for (j = 0; j < 4000; j++) judge[j] = 0;
    for (i = 0; i < n; i++) {
      sale_all[num[i]] += tanka[i] * sale_num[i];
    }
    for (i = 0; i < n; i++) {
      if ((sale_all[num[i]] >= 1000000) && (judge[num[i]] == 0)) {
        printf("%d\n", num[i]);
        judge[num[i]] = 1;
        k = 1;
      }
    }
    if (k != 1) printf("NA\n");
  }
  return 0;
}
