#include<bits/stdc++.h>
using namespace std;
int main(){
	int a[1500]={0},b[1500]={0},i,n;
	double x=0,y=0;
	double x1=0,x2=0;
	cin>>n;
	for(i=0;i<n;i++)cin>>a[i];
	for(i=0;i<n;i++)cin>>b[i];
	for(i=0;i<n;i++){
		x1+=a[i];
		x2+=b[i];
	}
	x2/=n;
	x1/=n;
	for(i=0;i<n;i++){
		x+=(a[i]-x1)*(a[i]-x1);
		y+=(b[i]-x2)*(b[i]-x2);
	}
	if(abs(x)<abs(y))cout<<"jia"<<endl;
	else cout<<"yi"<<endl;
	return 0;
	
}
/**************************************************************
	Problem: 1357
	User: admin
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/