#include <iostream>
using namespace std;
int main() 
{
    int s;
    double w, h, BMI;
    while(1) {
	scanf("%lf %lf %lf", s, w, h);	
	BMI = w / h / h;
	if (BMI >= 25)
            	cout << s << endl;
    }
    return 0;
}
