#include <iostream>

using namespace std;

int main(void) {
	
	while(1) {
		int num;
		cin >> num;
		if(cin.eof())	{ break; }
		
		double w, h;
		cin >> w >> h;
		
		if(w / (h * h) >= 25.0) {
			cout << num;
		}
		cout << endl;
	}
	return 0;
}