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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int t,n,a,b,c,x,y,wyn,pwyn;
  6. int main()
  7. {
  8.     cin>>t;
  9.     while(t--)
  10.     {
  11.         cin>>n;
  12.         if(n<3)
  13.         {
  14.             for(int i=0; i<n; ++i)
  15.                 cin>>x;
  16.             cout<<"0"<<endl; continue;
  17.         }
  18.  
  19.         cin>>a>>b>>c;
  20.         wyn=0;pwyn=0;
  21.         if((a>b&&c>b)||(a<b&&c<b))
  22.             pwyn++;
  23.         for(int i=3; i<n; ++i)
  24.         {
  25.             cin>>x;
  26.             y=b;
  27.             b=c;
  28.             c=x;
  29.             a=y;
  30.             if((a>b&&c>b)||(a<b&&c<b))
  31.             {
  32.                 pwyn++;
  33.                 if(pwyn>wyn)
  34.                     wyn=pwyn;
  35.             }
  36.             else
  37.             {
  38.                 pwyn=0;
  39.             }
  40.         }
  41.         if(pwyn>wyn)
  42.                 wyn=pwyn;
  43.         if(wyn>0)
  44.             cout<<wyn+2<<endl;
  45.         else
  46.             cout<<"0"<<endl;
  47.     }
  48.     return 0;
  49. }
  50.  
Success #stdin #stdout 0s 3460KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/ih4wdB
language:
C++ (gcc 8.3)
created:
9 years ago
visibility:
public

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