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