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import java.util.Scanner;

public class partition2

{

public static void main(String[] args)

{

Scanner in = new Scanner(System.in);

int t = in.nextInt();

// loop over t

for(int run = 0; run < t; run++)

{

int size = in.nextInt();

int ar[] = new int[size];

for(int i = 0; i < size; i++)

{

ar[i] = in.nextInt();

}

int i = find(ar);

if(i == 0)

System.out.println("YES");

else

System.out.println("NO");

}

}

// sorted ar

public static int find(int[] ar)

{

int sum = ar[0];

if(sum == ar[1])

return 0;

for(int i = 1; i < ar.length; i++)

{

sum += ar[i];

if(sum == ar[i + 1])

return 0;

}

return -1;

}

}