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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5.     ios_base::sync_with_stdio(0);
  6.     cout.tie(0);
  7.     cin.tie(0);
  8.  
  9.     int t;
  10.     cin >> t;
  11.  
  12.     int n;
  13.     while(t--)
  14.     {
  15.         cin >> n;
  16.  
  17.         bool check = true;
  18.         long long x1, y1, x2, y2, x, y;
  19.         vector<long long> X, Y;
  20.  
  21.         if(n <= 2)
  22.         {
  23.             for(int i = 1; i <= n; ++i)
  24.                 cin >> x >> y;
  25.             cout << "TAK" << endl;
  26.             continue;
  27.         }
  28.         cin >> x1 >> y1;
  29.         cin >> x2 >> y2;
  30.  
  31.         X.push_back(x1);
  32.         X.push_back(x2);
  33.         Y.push_back(y1);
  34.         Y.push_back(y2);
  35.  
  36.         if(x1 == x2 && y1 != y2)
  37.         {
  38.             for(int i = 3; i <= n; ++i)
  39.             {
  40.                 cin >> x >> y;
  41.                 if(x != x1)
  42.                 {
  43.                     check = false;
  44.                     break;
  45.                 }
  46.             }
  47.             if(!check)
  48.                 cout << "NIE" << endl;
  49.             else
  50.                 cout << "TAK" << endl;
  51.             continue;
  52.         }
  53.  
  54.         for(int i = 3; i <= n; ++i)
  55.         {
  56.             cin >> x >> y;
  57.             X.push_back(x);
  58.             Y.push_back(y);
  59.         }
  60.  
  61.         long long a;
  62.         for(int i = 2; i < n; ++i)
  63.         {
  64.             a = (Y[i-2]-Y[i-1])*(X[i-2]-X[i]) - (Y[i-2]-Y[i])*(X[i-2]-X[i-1]);
  65.             if(a != 0)
  66.             {
  67.                 check = false;
  68.                 break;
  69.             }
  70.         }
  71.  
  72.         if(!check)
  73.             cout << "NIE" << endl;
  74.         else
  75.             cout << "TAK" << endl;
  76.     }
  77.  
  78.     return 0;
  79. }
  80.  
Success #stdin #stdout 0s 5372KB
comments (?)
stdin
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4
4
0 0 
2 2
11 11
-2 -2
3
1 0
0 0 
0 1
3
1 5
1 9
1 413
3
4 32
8 32
9 32
stdout
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TAK
NIE
TAK
TAK
https://ideone.com/Bubp4Z
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
secret

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