Language: C++

include <iostream>
#include <cstdio>
int main(){
	int n,i;
	std::cin>>n;
	int a[n+1];
	char c[n+1];
	char S[14]={0},H[14]={0},C[14]={0},D[14]={0};
	for(i=0;i<n;i++){
		std::cin>>c[i]>>a[i];
	}
	for(i=0;i<n;i++){
		if(c[i]=='S')
			S[a[i]]=1;
		if(c[i]=='H')
			H[a[i]]=1;
		if(c[i]=='C')
			C[a[i]]=1;
		if(c[i]=='D')
			D[a[i]]=1;
	}
	for(i=1;i<=13;i++){
		if(S[i]==0)
			std::cout<< "S" << " "<<i<<std::endl;
	}
	for(i=1;i<=13;i++){
		if(H[i]==0)
			std::cout<< "H" << " "<<i<<std::endl;
	}
	for(i=1;i<=13;i++){
		if(C[i]==0)
			std::cout<< "C" << " "<<i<<std::endl;
	}
	for(i=1;i<=13;i++){
		if(D[i]==0)
			std::cout<< "D" << " "<<i<<std::endl;	
	}
	std::cout<<std::endl;
	return 0;
}

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include <iostream>
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:5:14: error: 'cin' is not a member of 'std'
    5 |         std::cin>>n;
      |              ^~~
a.cc:3:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    2 | #include <cstdio>
  +++ |+#include <iostream>
    3 | int main(){
a.cc:10:22: error: 'cin' is not a member of 'std'
   10 |                 std::cin>>c[i]>>a[i];
      |                      ^~~
a.cc:10:22: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:24:30: error: 'cout' is not a member of 'std'
   24 |                         std::cout<< "S" << " "<<i<<std::endl;
      |                              ^~~~
a.cc:24:30: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:24:57: error: 'endl' is not a member of 'std'
   24 |                         std::cout<< "S" << " "<<i<<std::endl;
      |                                                         ^~~~
a.cc:3:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
    2 | #include <cstdio>
  +++ |+#include <ostream>
    3 | int main(){
a.cc:28:30: error: 'cout' is not a member of 'std'
   28 |                         std::cout<< "H" << " "<<i<<std::endl;
      |                              ^~~~
a.cc:28:30: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:28:57: error: 'endl' is not a member of 'std'
   28 |                         std::cout<< "H" << " "<<i<<std::endl;
      |                                                         ^~~~
a.cc:28:57: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
a.cc:32:30: error: 'cout' is not a member of 'std'
   32 |                         std::cout<< "C" << " "<<i<<std::endl;
      |                              ^~~~
a.cc:32:30: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:32:57: error: 'endl' is not a member of 'std'
   32 |                         std::cout<< "C" << " "<<i<<std::endl;
      |                                                         ^~~~
a.cc:32:57: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
a.cc:36:30: error: 'cout' is not a member of 'std'
   36 |                         std::cout<< "D" << " "<<i<<std::endl;
      |                              ^~~~
a.cc:36:30: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:36:57: error: 'endl' is not a member of 'std'
   36 |                         std::cout<< "D" << " "<<i<<std::endl;
      |                                                         ^~~~
a.cc:36:57: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
a.cc:38:14: error: 'cout' is not a member of 'std'
   38 |         std::cout<<std::endl;
      |              ^~~~
a.cc:38:14: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:38:25: error: 'endl' is not a member of 'std'
   38 |         std::cout<<std::endl;
      |                         ^~~~
a.cc:38:25: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'