#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;
}
 

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