#include <bits/stdc++.h>
using namespace std;
int n[1000];
int main()
{
    freopen("running.in","r",stdin);
    freopen("running.out","w",stdout);
    int n,x,res = 0,tru = 0;
    scanf("%d %d",&n,&x);
    for(int i = 0;i < n;i++)
    {
        int num;
        scanf("%d",&num);
        res += num;
    }
    for(int i = 0;i < n;i++)
    {
        int num;
        scanf("%d",&num);
        tru += num;
    }
    int result = (res - tru) * x;
    if(result > 10000)
    {
        printf("2 hard 4 me");
        return 0;
    }
    else
    {
        printf("%d",result);
        return 0;
    }
}