for which test case getting the wrong answer???
import java.util.Scanner;
public class Main {
public static void main(String agrsp[]){
Scanner sc=new Scanner(System.in);
int t=sc.nextInt();
for(int f=0;f<t;f++){
int n=sc.nextInt();
int a[]=new int[n];
int b[]=new int[n];
int dp[]=new int[n];
for(int i=0;i<n;i++){
a[i]=sc.nextInt();
}
for(int i=0;i<n;i++){
b[i]=sc.nextInt();
}
int mm=0;
dp[0]=1;
for(int i=0;i<n;i++){
int max=0;
for(int j=0;j<i;j++){
if((a[i]<a[j] && b[i]<b[j]) || (a[i]>a[j] && b[i]>b[j]))
dp[i]= Math.max(dp[i],dp[j]+1);
}
if(dp[i]==0)
dp[i]=1;
}
for(int i=0;i<n;i++){
if(dp[i]>mm)
mm=dp[i];
}
System.out.println(mm);
}
}
}