#include <bits/stdc++.h>
int main() {
  int Sales[4001];
  int n, i, mem, price, amount, flag;
  while (1) {
    scanf("%d", &n);
    if (n == 0) break;
    for (i = 0; i < 4001; i++) {
      Sales[i] = 0;
    }
    for (i = 0; i < n; i++) {
      scanf("%d", &mem);
      scanf("%d", &price);
      scanf("%d", &amount);
      Sales[mem] += price * amount;
    }
    flag = 0;
    for (i = 1; i < 4001; i++) {
      if (Sales[i] >= 1000000) {
        printf("%d\n", i);
        flag = 1;
      }
    }
    if (flag == 0) {
      printf("NA\n");
    }
  }
  return 0;
}
