#include<iostream>
#include<stdio.h>
using namespace std;
int main(){
  int num;
  double tai,sint;
  char d;
  while(scanf("%d,%lf,%lf",&num,&tai,&sint)!='\0'){
  //cout<<tai/sint*sint<<endl;
    if(tai/(sint*sint)>=25)cout<<num<<endl;
  }
}