#include <iostream>
#include <cstdio>
#include <vector>
#include <algorithm>
#include <complex>
#include <cmath>
using namespace std;

#define REP(i,n) for(int i=0;i<(int)n;++i)
#define FOR(i,c) for(__typeof((c).begin())i=(c).begin();i!=(c).end();++i)
#define ALL(c) (c).begin(), (c).end()

int main() {
  int x;
  double w, h;
  while(scanf("%d,%lf,%lf\n",&x,&w,&h)==3)
    if (w/h/h>=25) cout << x << endl;
}