Language: C++

//In the Name of God
#include <bits/stdc++.h>

using namepace std;

int main()
{
	int n;
	cin>>n;
	vector <int> h(n);
	for(int i=0;i<n;i++)
		cin>>h[i];
	vector <int> dp(n);
	dp[0] = h[0];
	dp[1] = abs(h[0]-h[1]);
	for(int i=2;i<n;i++)
		dp[i] = min(abs(h[i]-h[i-1]),abs(h[i]-h[i-2]));
	cout<<dp[n-1]<<endl;
}

Compiler output:
a.cc:4:7: error: expected nested-name-specifier before 'namepace'
    4 | using namepace std;
      |       ^~~~~~~~
a.cc: In function 'int main()':
a.cc:9:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    9 |         cin>>n;
      |         ^~~
      |         std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:2:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:10:9: error: 'vector' was not declared in this scope
   10 |         vector <int> h(n);
      |         ^~~~~~
a.cc:10:9: note: suggested alternatives:
In file included from /usr/include/c++/14/vector:66,
                 from /usr/include/c++/14/functional:64,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:53:
/usr/include/c++/14/bits/stl_vector.h:428:11: note:   'std::vector'
  428 |     class vector : protected _Vector_base<_Tp, _Alloc>
      |           ^~~~~~
/usr/include/c++/14/vector:93:13: note:   'std::pmr::vector'
   93 |       using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
      |             ^~~~~~
a.cc:10:17: error: expected primary-expression before 'int'
   10 |         vector <int> h(n);
      |                 ^~~
a.cc:12:22: error: 'h' was not declared in this scope
   12 |                 cin>>h[i];
      |                      ^
a.cc:13:17: error: expected primary-expression before 'int'
   13 |         vector <int> dp(n);
      |                 ^~~
a.cc:14:9: error: 'dp' was not declared in this scope; did you mean 'dup'?
   14 |         dp[0] = h[0];
      |         ^~
      |         dup
a.cc:14:17: error: 'h' was not declared in this scope
   14 |         dp[0] = h[0];
      |                 ^
a.cc:17:25: error: 'min' was not declared in this scope; did you mean 'std::min'?
   17 |                 dp[i] = min(abs(h[i]-h[i-1]),abs(h[i]-h[i-2]));
      |                         ^~~
      |                         std::min
In file included from /usr/include/c++/14/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51:
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: 'std::min' declared here
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
a.cc:18:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   18 |         cout<<dp[n-1]<<endl;
      |         ^~~~
      |         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:18:24: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   18 |         cout<<dp[n-1]<<endl;
      |                        ^~~~
      |                        std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~