#include <cstdio> 
#include <iostream> 
 
using namespace std; 
 
int main(void) 
{ 
  int a; 
  double b, c; 
  int kiken[100]; 
 
  while (scanf("%d,%lf,%lf", &a, &b, &c)){ 
    int d = 0; 
    d = c / (b * b); 
    if (d <= 25.00){ 
      cout << a << endl; 
    } 
  } 

  return (0); 
}