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  1. #include <vector>
  2. #include <list>
  3. #include <map>
  4. #include <set>
  5. #include <deque>
  6. #include <stack>
  7. #include <bitset>
  8. #include <algorithm>
  9. #include <functional>
  10. #include <numeric>
  11. #include <utility>
  12. #include <sstream>
  13. #include <iostream>
  14. #include <iomanip>
  15. #include <cstdio>
  16. #include <cmath>
  17. #include <cstdlib>
  18. #include <ctime>
  19. #define ll long long
  20.  
  21. using namespace std;
  22.  
  23. class PlaneGame {
  24. public:
  25.   int bestShot(vector <int>, vector <int>);
  26. };
  27.  
  28. int PlaneGame::bestShot(vector <int> x, vector <int> y) {
  29.   int n = x.size();
  30.   int ans = 0;
  31.   if(n == 1 || n == 2 || n == 3)
  32.   {
  33.     return n;
  34.     return 0;
  35.   }
  36.   for(int i = 0;i < n;i++)
  37.   {
  38.     for(int j = 0;j < n;j++)
  39.     {
  40.       for(int k = 0;k < n;k++)
  41.       {
  42.         if(i == j || j == k || k == i)
  43.           continue;
  44.         int curans = 3;
  45.         ll x1 = x[i], x2 = x[j], x3 = x[k];
  46.         ll y1 = y[i], y2 = y[j], y3 = y[k];
  47.         for(int l = 0;l < n;l++)
  48.         {
  49.           if(l == i || l == j || l == k) continue;
  50.           ll x4 = x[l], y4 = y[l];
  51.           bool b1 = (((x4-x3)*(x1-x2)+(y4-y3)*(y1-y2)) == 0);
  52.           bool b2 = (((y4-y1)*(x1-x2)) == ((y1-y2)*(x4-x1)));
  53.           if(b1 || b2) curans++;
  54.         }
  55.         ans = max(curans, ans);
  56.       }
  57.     }
  58.   }
  59.  
  60.   return ans;
  61. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
/usr/lib/gcc/i586-linux-gnu/5/../../../i386-linux-gnu/crt1.o: In function `_start':
(.text+0x18): undefined reference to `main'
collect2: error: ld returned 1 exit status
stdout
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Standard output is empty
https://ideone.com/vdyaTI
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
secret

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