运行 ID: 135369

Main.cc:3:17: error: ‘tsd’ is not a namespace-name
 using namespace tsd;
                 ^~~
Main.cc:3:20: error: expected namespace-name before ‘;’ token
 using namespace tsd;
                    ^
Main.cc: In function ‘int main()’:
Main.cc:6:2: error: ‘cin’ was not declared in this scope
  cin>>n;
  ^~~
Main.cc:6:2: note: suggested alternative:
In file included from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:75:0,
                 from Main.cc:1:
/usr/include/c++/7/iostream:60:18: note:   ‘std::cin’
   extern istream cin;  /// Linked to standard input
                  ^~~
Main.cc:8:8: error: ‘a’ was not declared in this scope
   cin>>a[i];
        ^
Main.cc:10:7: error: ‘a’ was not declared in this scope
  sort(a + 1,a + n + 1);
       ^
Main.cc:10:2: error: ‘sort’ was not declared in this scope
  sort(a + 1,a + n + 1);
  ^~~~
Main.cc:10:2: note: suggested alternative:
In file included from /usr/include/c++/7/algorithm:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:65,
                 from Main.cc:1:
/usr/include/c++/7/bits/stl_algo.h:4856:5: note:   ‘std::sort’
     sort(_RandomAccessIterator __first, _RandomAccessIterator __last,
     ^~~~
Main.cc:12:3: error: ‘cout’ was not declared in this scope
   cout<