#include<bits/stdc++.h>
#define int long long
#define N 1005
using namespace std;
int n,x,a[N],b[N],ans; 
signed main() {
	freopen("running.in","r",stdin);
	freopen("running.out","w",stdout);
	scanf("%lld%lld",&n,&x);
	for(int i=1;i<=n;i++){
		scanf("%lld",&a[i]);
	}
	for(int i=1;i<=n;i++){
		scanf("%lld",&b[i]);
	}
	for(int i=1;i<=n;i++){
		ans+=(a[i]-b[i])*x;
	}
	if(ans<=10000)cout<<ans;
	else cout<<"2 hard 4 me";
	return 0;
}