#include <bits/stdc++.h>
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define REP(i,b) FOR(i,0,b)
#define BE(c) c.begin(),c.end()
#define PB push_back
#define F first
#define S second
#define BEB(s) s
using namespace std;
int main(){
	char com;
	double BMI,b,c;
	int a;
	while(cin>>a>>com>>b>>com>>c){
		if(25<=b/(c*c))cout<<a<<endl;
	}
	return 0;
}