#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  while (scanf("%d", &n), n) {
    int mem[4500] = {0};
    int a, x, y;
    int xx = 0;
    for (int i = 0; i < n; i++) {
      scanf("%d%d%d", &a, &x, &y);
      mem[a] += x * y;
      if (xx < a) xx = a;
    }
    bool flg = 0;
    for (int i = 1; i <= xx; i++) {
      if (mem[i] >= 1000000) {
        printf("%d\n", i);
        flg = 1;
      }
    }
    if (flg == 0) printf("NA\n");
  }
  return 0;
}
