Language: C++

#include<iostream>
#include<stdio.h>
#include<algorithm>
using namespace std;
int time[210][2];
int a[101][2];
int main(){
	int i,j,n,k,c=0,s=0;
	cin>>n;
	for(i=0;i<n;i++){
		cin>>time[i][0]>>time[i][1];
	}
	cin>>k;
	for(i=0;i<k;i++){
		cin>>a[i][0]>>a[i][1];
	}
	c=n;
	for(i=0;i<k;i++){
		for(j=0;j<n;j++){
			if(time[j][0]==a[i][0]&&time[j][1]==a[i][1]){
				s=1;
			}
		}
		if(s==0){
			time[c][0]=a[i][0];
			time[c][1]=a[i][1];
			c++;
		}
		s=0;
	}
	//cout<<c<<endl;
	for(i=0;i<c;i++){
		for(j=c-1;j>i;j--){
			if(time[i][0]>time[j][0]||time[i][0]==time[j][0]&&time[i][1]>time[j][1]){
				swap(time[i][0],time[j][0]);
				swap(time[i][1],time[j][1]);
			}
		}
	}
	for(i=0;i<c;i++){
		if(i>0){
			cout<<" ";
		}
		if(time[i][1]<10){
			printf("%2d:0%d",time[i][0],time[i][1]);
		}
		else{
			printf("%2d:%d",time[i][0],time[i][1]);
		}
	}
	cout<<endl;
	return 0;
}

Compiler output:
a.cc:5:16: error: 'int time [210][2]' redeclared as different kind of entity
    5 | int time[210][2];
      |                ^
In file included from /usr/include/pthread.h:23,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/gthr-default.h:35,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/gthr.h:157,
                 from /usr/include/c++/14/ext/atomicity.h:35,
                 from /usr/include/c++/14/bits/ios_base.h:39,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/time.h:76:15: note: previous declaration 'time_t time(time_t*)'
   76 | extern time_t time (time_t *__timer) __THROW;
      |               ^~~~
a.cc: In function 'int main()':
a.cc:11:28: warning: pointer to a function used in arithmetic [-Wpointer-arith]
   11 |                 cin>>time[i][0]>>time[i][1];
      |                            ^
a.cc:11:31: warning: pointer to a function used in arithmetic [-Wpointer-arith]
   11 |                 cin>>time[i][0]>>time[i][1];
      |                               ^
a.cc:11:20: error: no match for 'operator>>' (operand types are 'std::istream' {aka 'std::basic_istream<char>'} and 'time_t(time_t*) noexcept' {aka 'long int(long int*) noexcept'})
   11 |                 cin>>time[i][0]>>time[i][1];
      |                 ~~~^~~~~~~~~~~~
      |                 |             |
      |                 |             time_t(time_t*) noexcept {aka long int(long int*) noexcept}
      |                 std::istream {aka std::basic_istream<char>}
In file included from /usr/include/c++/14/iostream:42:
/usr/include/c++/14/istream:170:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  170 |       operator>>(bool& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:170:7: note:   conversion of argument 1 would be ill-formed:
a.cc:11:31: error: cannot bind non-const lvalue reference of type 'bool&' to a value of type 'time_t (*)(time_t*) noexcept' {aka 'long int (*)(long int*) noexcept'}
   11 |                 cin>>time[i][0]>>time[i][1];
      |                      ~~~~~~~~~^
/usr/include/c++/14/istream:174:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  174 |       operator>>(short& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:174:7: note:   conversion of argument 1 would be ill-formed:
a.cc:11:31: error: invalid conversion from 'time_t (*)(time_t*) noexcept' {aka 'long int (*)(long int*) noexcept'} to 'short int' [-fpermissive]
   11 |                 cin>>time[i][0]>>time[i][1];
      |                      ~~~~~~~~~^
      |                               |
      |                               time_t (*)(time_t*) noexcept {aka long int (*)(long int*) noexcept}
a.cc:11:31: error: cannot bind rvalue '(short int)(time + ((sizetype)i))' to 'short int&'
/usr/include/c++/14/istream:177:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  177 |       operator>>(unsigned short& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:177:7: note:   conversion of argument 1 would be ill-formed:
a.cc:11:31: error: invalid conversion from 'time_t (*)(time_t*) noexcept' {aka 'long int (*)(long int*) noexcept'} to 'short unsigned int' [-fpermissive]
   11 |                 cin>>time[i][0]>>time[i][1];
      |                      ~~~~~~~~~^
      |                               |
      |                               time_t (*)(time_t*) noexcept {aka long int (*)(long int*) noexcept}
a.cc:11:31: error: cannot bind rvalue '(short unsigned int)(time + ((sizetype)i))' to 'short unsigned int&'
/usr/include/c++/14/istream:181:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  181 |       operator>>(int& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:181:7: note:   conversion of argument 1 would be ill-formed:
a.cc:11:31: error: invalid conversion from 'time_t (*)(time_t*) noexcept' {aka 'long int (*)(long int*) noexcept'} to 'int' [-fpermissive]
   11 |                 cin>>time[i][0]>>time[i][1];
      |                      ~~~~~~~~~^
      |                               |
      |                               time_t (*)(time_t*) noexcept {aka long int (*)(long int*) noexcept}
a.cc:11:31: error: cannot bind rvalue '(int)(time + ((sizetype)i))' to 'int&'
/usr/include/c++/14/istream:184:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  184 |       operator>>(unsigned int& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:184:7: note:   conversion of argument 1 would be ill-formed:
a.cc:11:31: error: invalid conversion from 'time_t (*)(time_t*) noexcept' {aka 'long int (*)(long int*) noexcept'} to 'unsigned int' [-fpermissive]
   11 |                 cin>>time[i][0]>>time[i][1];
      |                      ~~~~~~~~~^
      |                               |
      |                               time_t (*)(time_t*) noexcept {aka long int (*)(long int*) noexcept}
a.cc:11:31: error: cannot bind rvalue '(unsigned int)(time + ((sizetype)i))' to 'unsigned int&'
/usr/include/c++/14/istream:188:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  188 |       operator>>(long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:188:7: note:   conversion of argument 1 would be ill-formed:
a.cc:11:31: error: invalid conversion from 'time_t (*)(time_t*) noexcept' {aka 'long int (*)(long int*) noexcept'} to 'long int' [-fpermissive]
   11 |                 cin>>time[i][0]>>time[i][1];
      |                      ~~~~~~~~~^
      |                               |
      |                               time_t (*)(time_t*) noexcept {aka long int (*)(long int*) noexcept}
a.cc:11:31: error: cannot bind rvalue '(long int)(time + ((sizetype)i))' to 'long int&'
/usr/include/c++/14/istream:192:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  192 |       operator>>(unsigned long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:192:7: note:   conversion of argument 1 would be ill-formed:
a.cc:11:31: error: invalid conversion from 'time_t (*)(time_t*) noexcept' {aka 'long int (*)(long int*) noexcept'} to 'long unsigned int' [-fpermissive]
   11 |                 cin>>time[i][0]>>time[i][1];
      |                      ~~~~~~~~~^
      |                               |
      |                               time_t (*)(time_t*) noexcept {aka long int (*)(long int*) noexcept}
a.cc:11:31: error: cannot bind rvalue '(long unsigned int)(time + ((sizetype)i))' to 'long unsigned int&'
/usr/include/c++/14/istream:199:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  199 |       operator>>(long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:199:7: note:   conversion of argument 1 would be ill-formed:
a.cc:11:31: error: invalid conversion from 'time_t (*)(time_t*) noexcept' {aka 'long int (*)(long int*) noexcept'} to 'long long int' [-fpermissive]
   11 |                 cin>>time[i][0]>>time[i][1];
      |                      ~~~~~~~~~^
      |                               |
      |                               time_t (*)(time_t*) noexcept {aka long int (*)(long int*) noexcept}
a.cc:11:31: error: cannot bind rvalue '(long long int)(time + ((sizetype)i))' to 'long long int&'
/usr/include/c++/14/istream:203:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  203 |       operator>>(unsigned long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:203:7: note:   conversion of argument 1 would be ill-formed:
a.cc:11:31: error: invalid conversion from 'time_t (*)(time_t*) noexcept' {aka 'long int (*)(long int*) noexcept'} to 'long long unsigned int' [-fpermissive]
   11 |                 cin>>time[i][0]>>time[i][1];
      |                      ~~~~~~~~~^
      |                               |
      |                               time_t (*)(time_t*) noexcept {aka long int (*)(long int*) noexcept}
a.cc:11:31: error: cannot bind rvalue '(long long unsigned int)(time + ((sizetype)i))' to 'long long unsigned int&'
/usr/include/c++/14/istream:328:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  328 |       operator>>(void*& __p)
      |       ^~~~~~~~
/usr/include/c++/14/istream:328:7: note:   conversion of argument 1 would be ill-formed:
a.cc:11:31: error: invalid conversion from 'time_t (*)(time_t*) noexcept' {aka 'long int (*)(long int*) noexcept'} to 'void*' [-fpermissive]
   11 |                 cin>>ti