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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int t, n, a, c, b, y, x, najw;
  6.  
  7. int main()
  8. {
  9.     ios_base::sync_with_stdio(0);
  10.     cin>>t;
  11.     while(t--)
  12.     {
  13.         najw=0;
  14.         y=1;
  15.         x=2;
  16.         cin>>n;
  17.         cin>>a;
  18.  
  19.         if(n==1)
  20.         {
  21.             cout<<"1"<<endl;
  22.             continue;
  23.         }
  24.         cin>>b; n-=2;
  25.         while(a==b&&n!=0)
  26.         {
  27.             cin>>b;
  28.             x++;
  29.             y++;
  30.         }
  31.         if(!n)
  32.         {
  33.             cout<<x<<endl; continue;
  34.         }
  35.         while(n--)
  36.         {
  37.             cin>>c;
  38.             if(b==c)
  39.             {
  40.                 x++;
  41.                 y++;
  42.             }
  43.             else if(c==a)
  44.             {
  45.                 y=1;
  46.                 x++;
  47.                 a=b;
  48.                 b=c;
  49.             }
  50.  
  51.             else
  52.             {
  53.                 if(x>najw)
  54.                     najw=x;
  55.  
  56.                 x=y+1;
  57.                 y=1;
  58.                 a=b;
  59.                 b=c;
  60.             }
  61.         }
  62.         if(x>najw)
  63.             najw=x;
  64.         cout<<najw<<endl;
  65.  
  66.  
  67.     }
  68.     return 0;
  69. }
  70.  
Success #stdin #stdout 0s 3456KB
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https://ideone.com/wpKf92
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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