#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;


int main()
{

   {
      struct T{  int a[4]; };

      std::vector<T> arr1{1000};
      std::sort(arr1.begin(),arr1.end(),[](auto,auto)->bool{return false;});
      printf("+\n");
   }

   {
      using int4=int[4];

      std::vector<int4> arr2{1000};
//*=>*/std::sort(arr2.begin(),arr2.end(),[](auto,auto)->bool{return false;}); /*<=*/
      printf("+\n");
   }



   return 0;
}