#include <bits/stdc++.h>
int main(void) {
  int n;
  int employees[4000] = {0};
  while (~scanf("%d", &n) && n) {
    for (int i = 0; i < n; i++) {
      int id, price, sales;
      scanf("%d %d %d", &id, &price, &sales);
      employees[id] += price * sales;
    }
    int found = 0;
    for (int i = 0; i < 4000; i++) {
      if (employees[i] >= 1000000) {
        printf("%d\n", i);
        found = 1;
      }
    }
    memset(employees, 0, sizeof employees);
    if (!found) {
      printf("NA\n");
    }
  }
  return 0;
}
