#include <bits/stdc++.h>
int main() {
  int tmp = 0, tmpi = 0, tmpp = 0, tmpq = 0, n = 1, tmpn = 0, ans0 = 0;
  long long int ans[4001];
  while (1) {
    ans0 = 0;
    scanf("%d", &n);
    if (n == 0) break;
    for (tmp = 0; tmp < 4001; tmp++) ans[tmp] = 0;
    for (tmpn = 0; tmpn < n; tmpn++) {
      scanf("%d %d %d", &tmpi, &tmpp, &tmpq);
      ans[tmpi] += tmpp * tmpq;
    }
    for (tmp = 0; tmp < 4001; tmp++) {
      if (ans[tmp] >= 1000000) {
        ans0++;
        printf("%d\n", tmp);
      }
    }
    if (ans0 == 0) puts("NA");
  }
  return 0;
}
