#include <bits/stdc++.h>

using namespace std;

int main(){

        double bmi[3];

        while(scanf("%lf,%lf,%lf", &bmi[0], &bmi[1], &bmi[2]) != EOF){

                if(bmi[1] / (bmi[2] * bmi[2]) >= 25) cout << bmi[0] << endl;

        }

}