0316:

import java.io.*;
import java.util.*;

class Main {
    int a, b, c, d;

    int getScore( int iw, int ym ) { return a*iw + b*ym + c*(iw/10) + d*(ym/20); }

    void solve(){
	Scanner sc = new Scanner(System.in);
	int h1 = sc.nextInt(), h2 = sc.nextInt();
	int k1 = sc.nextInt(), k2 = sc.nextInt();

	a = sc.nextInt();�@b = sc.nextInt();�@c = sc.nextInt();�@d = sc.nextInt();

	int hp = getScore( h1, h2 );
	int kp = getScore( k1, k2 );

	if      ( hp > kp ) System.out.println("hiroshi");
	else if ( hp < kp ) System.out.println("kenjiro");
	else                System.out.println("even");
    }

    public static void main(String[] a) {new Main().solve(); }
}