Language: C++

#include<bits/stdc++.h>
using namepsace std;

int main()
{
  	string s,t;
  	cin>>s>>t;
  
  	int l1=s.size(),l2=t.size();
  	
  	int mi_cnt=l2;
  
  	for(int i=0;i+l2-1<l1;i++)
    {
      	int cnt=0;
      	for(int j=0;j<l2;j++)
        {
          	if(t[j] != s[i+j])
              	cnt++;
        }
      	mi_cnt=min(mi_cnt,cnt);
    }
  	cout<<mi_cnt<<endl;
  	return 0;
}

Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'namepsace'
    2 | using namepsace std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:6:9: error: 'string' was not declared in this scope
    6 |         string s,t;
      |         ^~~~~~
a.cc:6:9: note: suggested alternatives:
In file included from /usr/include/c++/14/string:41,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/stringfwd.h:77:33: note:   'std::string'
   77 |   typedef basic_string<char>    string;
      |                                 ^~~~~~
/usr/include/c++/14/string:76:11: note:   'std::pmr::string'
   76 |     using string    = basic_string<char>;
      |           ^~~~~~
a.cc:7:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    7 |         cin>>s>>t;
      |         ^~~
      |         std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:14: error: 's' was not declared in this scope
    7 |         cin>>s>>t;
      |              ^
a.cc:7:17: error: 't' was not declared in this scope; did you mean 'tm'?
    7 |         cin>>s>>t;
      |                 ^
      |                 tm
a.cc:11:20: error: 'l2' was not declared in this scope; did you mean 'l1'?
   11 |         int mi_cnt=l2;
      |                    ^~
      |                    l1
a.cc:21:16: error: 'min' was not declared in this scope; did you mean 'std::min'?
   21 |         mi_cnt=min(mi_cnt,cnt);
      |                ^~~
      |                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:23:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   23 |         cout<<mi_cnt<<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:23:23: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   23 |         cout<<mi_cnt<<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)
      |     ^~~~