#include <iostream>
#include <cstdio>

using namespace std;

int main(void) {
	int num;
	double w, h;
	while(scanf("%d,%lf,%lf", &num, &w, &h) != EOF) {
		if(w / (h * h) >= 25.0)		cout << num << endl;
	}
	return 0;
}