#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n,i;
	float s=0,m=0.0,z=0,x=0;
	cin>>n;	
	int a[n];
	int b[n];
	for(i=0;i<=n-1;i++){
		cin>>a[i];
		s+=a[i];
	}s=s/n;
	for(i=0;i<=n-1;i++){
		cin>>b[i];
		m+=b[i];
	}m=m/n;
	for(i=0;i<=n-1;i++){
		z=z+(a[i]-s)*(a[i]-s);
	}
	for(i=0;i<=n-1;i++){
		x=x+(b[i]-m)*(b[i]-m);
	}
	if(z<x)
	cout<<"jia";
	else
	cout<<"yi";
	return 0;
}
/**************************************************************
	Problem: 1357
	User: houshanglin
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/