import java.util.*;
class Prog{
public static void main
(String arg
[]){ Scanner in
= new Scanner
(System.
in); int n = in.nextInt();
int k = in.nextInt();
int a[] = new int[n];
int b[] = new int[n];
for(int i=0;i<n;i++)
{
a[i] = in.nextInt();
}
for(int i=0;i<n;i++)
{
b[i] = in.nextInt();
}
int sum =0;
int min =a[0];
for(int i=0;i<n;i++)
{
if(a[i] == -3 )
{
a[i] = a[i] + 10;
}
else if(a[i] == 3)
{
a[i] = a[i] - 6;
}
}
int result = 0;
for(int i=0;i<n;i++){
sum =sum + a[i]*b[i];
}
}
}
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