#include<bits/stdc++.h>
using namespace std;
const int M=10007;
int n,m;
unsigned long long ans;

struct node
{
	int num,col;
	
}pai[100005];
int geshu[100005];
int las[100005][25];
int main()
{
	cin>>n>>m;
	for(int i=1;i<=n;i++)
	{
		cin>>pai[i].num ;
	}
	for(int i=1;i<=n;i++)
	{
		cin>>pai[i].col ;
		las[pai[i].col ][++geshu[pai[i].col ]]=i;
	}
	
	
		for(int i=1;i<=n;i++)
		{
			for(int p=1;p<=geshu[pai[i].col];p++)
			{
				int j=las[pai[i].col ][p];
				
				if(j>i+1&&(j-i)%2==0)
				{//cout<<ans<<endl;
					ans+=(i+j)*(pai[i].num +pai[j].num );
					ans%=M;
				}
			}
		}
		cout<<ans%M; 
	
	return 0;
}