#include <iostream>
#include <math.h>
#include <stdio.h>
#include <string>
#include <string.h>
#include <algorithm>
#include <cmath>
#include <limits>
#include <sstream>

using namespace std;

int main (void)
{
	for (int j = 0; j < 50; j++)
	{
		int n = 0;
		float a = 0,b = 0;
		char v,vv;

		cin >> n >> v >> a >> vv >> b;
		

		if (a / (b * b) >= 25)
		{
			cout << n << endl;
		}
	}

}
