#include <iostream>
#include <cmath>
using namespace std;

int main()
{
int a,m; cin>>a>>m;
int b,n; cin>>b>>n;
float num1=1.0*a/m;
float num2=1.0*b/n;
if(num1>num2)
cout<<"xiao wang shi huai dan"<<endl;
else
if(num1<num2)
cout<<"xiao gu shi hao ren"<<endl;
else
cout<<"yi xiang tian kai"<<endl;
return 0;
}