#include<bits/stdc++.h>
using namespace std;
int main(){
  int i,n,m,s=0,x=0;
  int a[100]={0},b[100]={0};
  float c=0,d=0;
  cin>>n;
  for(i=0;i<n;i++){
	cin>>a[i];
	s=s+a[i];  
  }
  for(i=0;i<n;i++){
	cin>>b[i];
	x=x+b[i];
  }
  for(i=0;i<n;i++){
  c=c+(s-a[i])*(s-a[i]);
  }
  for(i=0;i<n;i++){
  d=d+(x-b[i])*(x-b[i]);
  }
  if(d>c) cout<<"jia";
  else cout<<"yi";
return 0;
}
/**************************************************************
	Problem: 1357
	User: wtq001
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/