#include <bits/stdc++.h>
#define rep(i,a,n) for(int i=a;i<n;i++)
#define repr(i,a,n) for(int i=a;i>=n;i--)
#define INF 999999999
#define INF_M 2147483647
#define pb(a) push_back(a)
using namespace std;
typedef pair<int, int> pii;
typedef long long int ll;

int main() {
    int a;
    double b, c;
    while(~scanf("%d,%lf,%lf",&a,&b,&c)) {
        if(b / c / c >= 25) cout << a << endl;
    }
return 0;
}