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- #include<iostream>
- using namespace std;
- int main()
- {
- int n,i,t,j,k,c;
- cin>>t;
- while(t--)
- {
- cin>>n;
- c=0;
- int arr[n];
- for(i=0; i<n; i++)
- {
- cin>>arr[i];
- }
- for(i=0; i<n-1; i++)
- {
- k=arr[i]+arr[i+1];
- for(j=0; j<n; j++)
- {
- if(arr[j]==k)
- {
- c=1;
- break;
- }
- else
- c=0;
- }
- }
- if(c==1)
- cout<<"yes"<<endl;
- else
- cout<<"no"<<endl;
- }
- return 0;
- }
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