#include <bits/stdc++.h>
int main(void) {
  long member[4000], unit, num;
  int n, i, number, f;
  while (scanf("%d", &n), n != 0) {
    f = 0;
    for (i = 0; i < 4000; i++) {
      member[i] = 0;
    }
    for (i = 0; i < n; i++) {
      scanf("%d %ld %ld", &number, &unit, &num);
      member[number - 1] += unit * num;
    }
    for (i = 0; i < n; i++) {
      if (member[i] >= 1000000) {
        printf("%d\n", i + 1);
        f = 1;
      }
    }
    if (f == 0) {
      printf("NA\n");
    }
  }
  return (0);
}
