1 #include <cstdio> 2 #include <cstring> 3 #include <algorithm> 4 #define maxn 1001 5 #define ll long long 6 using namespace std; 7  8 int t; 9 int n;10 int a[maxn];11 12 int main()13 {14     scanf("%d",&t);15     while(t--)16     {17         ll sum1=0,sum2=0;18         scanf("%d",&n);19         for(int i=0; i<n; i++)20         {21             scanf("%d",&a[i]);22             if(i%2==0)23             {24                 sum1+=a[i];25             }26             else27             {28                 sum2+=a[i];29             }30         }31         bool flag=false;32         for(int i=0; i<=n/2; i++)33         {34             if(a[i]!=a[n-1-i])35             {36                 flag=true;37                 break;38             }39         }40         if(sum1==sum2&&flag)41         {42             printf("Yes\n");43         }44         else printf("No\n");45     }46     return 0;47 }