#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
float a,b,c,d;
cin>>a>>b>>c>>d;
if(b/a>d/c)
{
	cout<<"xiao gu shi hao ren";
}
else if(b/a<d/c)
cout<<"xiao wang shi huai dan";
else
cout<<"yi yang tian kai";
}