#include<bits/stdc++.h>
using namespace std; 
int main(){ 
    int n;
    cin>>n;
    
    int a[105],b[105];
    double sum1=0,sum2=0;
    
    for(int i=1;i<=n;i++){
        cin>>a[i];
        sum1+=a[i];
    }
    for(int i=1;i<=n;i++){
        cin>>b[i];
        sum2+=b[i];
    }
    
    double avg1=sum1/n;
    double avg2=sum2/n;
    double s1=0,s2=0;
    
    for(int i=1;i<=n;i++){
        s1+=(a[i]-avg1)*(a[i]-avg1);
    }
    for(int i=1;i<=n;i++){
        s2+=(b[i]-avg2)*(b[i]-avg2);
    }
    
    if(s1<s2) cout<<"jia";
    else cout<<"yi";
    
    return 0;
}