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  1. #include <iostream>
  2. #include <string>
  3. using namespace std;
  4. int main()
  5. { int t,n;long int a[22];int sum,flag=0;int i,j;
  6.    cin>>t;
  7.    for(i=0;i<t;i++)
  8. {cin>>n;
  9.    for(int j=0;j<n;j++)
  10.       {cin>>a[j];}
  11.       flag=0;
  12.       for(j=0;j<n;j++)
  13.          {
  14.          for(int u=j+1;u<n;u++)
  15.            {sum=a[j]*a[u];
  16.               for(int x=0;x<n;x++)
  17.                 {if(sum==a[x])
  18.                    {flag=1;}
  19.                 }
  20.            }
  21.          }
  22.          if(flag==1)cout<<"yes"<<endl;
  23.          else cout<<"no"<<endl;
  24.  
  25. }
  26.          return 0;
  27. }
  28.  
Success #stdin #stdout 0s 16064KB
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https://ideone.com/CmUz0E
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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