#include<iostream>
#include<cstdio>
#include<cmath>
using namespace std;

int main(){
	int num;
	double t,s;
	while(scanf("%d,%lf,%lf",&num,&t,&s)!=EOF){
		double ans = t / (s * s);
		if(ans >= 25.0){
			cout << num << endl;
		}
	}
}