Language: C++

#include<iostream>
#include<string>
#include<algorithm>
#include<vector>
#include<utility>
#include<queue>
using namespace std;
int n, m, ad[10010][3];//  mid/p>y
vector<int>bir[100010];

int main(){
	cin >> n >> m;
	for (int i = 0; i < m; i++) {
		int y, p;
		cin >> y >> p;
		bir[p].push_back(y);
		ad[i][0] = p;
		ad[i][1] = y;
	}
	for (int i = 1; i <= n; i++) sort(bir[i], bir[i] + bir[i].size());
	for (int i = 0; i < m; i++) {
		int pr = ad[i][0];
		for (int j = 100000; j > 0; j /= 10) {
			pr /= j;
			cout << pr;
		}
		for (int k = 0; k < bir[ad[i][0]].size(); k++) {
			if (ad[i][1] == bir[ad[i][0]][k]) {
				int b = k + 1;
				for (int j = 100000; j > 0; j /= 10) {
					b /= j;
					cout << b;
				}
			}
		}
		cout << endl;
	}

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:20:58: error: no match for 'operator+' (operand types are 'std::vector<int>' and 'std::vector<int>::size_type' {aka 'long unsigned int'})
   20 |         for (int i = 1; i <= n; i++) sort(bir[i], bir[i] + bir[i].size());
      |                                                   ~~~~~~ ^ ~~~~~~~~~~~~~
      |                                                        |              |
      |                                                        |              std::vector<int>::size_type {aka long unsigned int}
      |                                                        std::vector<int>
In file included from /usr/include/c++/14/string:48,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 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/c++/14/bits/stl_iterator.h:627:5: note: candidate: 'template<class _Iterator> constexpr std::reverse_iterator<_Iterator> std::operator+(typename reverse_iterator<_Iterator>::difference_type, const reverse_iterator<_Iterator>&)'
  627 |     operator+(typename reverse_iterator<_Iterator>::difference_type __n,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:627:5: note:   template argument deduction/substitution failed:
a.cc:20:72: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'std::vector<int>::size_type' {aka 'long unsigned int'}
   20 |         for (int i = 1; i <= n; i++) sort(bir[i], bir[i] + bir[i].size());
      |                                                                        ^
/usr/include/c++/14/bits/stl_iterator.h:1798:5: note: candidate: 'template<class _Iterator> constexpr std::move_iterator<_IteratorL> std::operator+(typename move_iterator<_IteratorL>::difference_type, const move_iterator<_IteratorL>&)'
 1798 |     operator+(typename move_iterator<_Iterator>::difference_type __n,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1798:5: note:   template argument deduction/substitution failed:
a.cc:20:72: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'std::vector<int>::size_type' {aka 'long unsigned int'}
   20 |         for (int i = 1; i <= n; i++) sort(bir[i], bir[i] + bir[i].size());
      |                                                                        ^
In file included from /usr/include/c++/14/string:54:
/usr/include/c++/14/bits/basic_string.h:3598:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3598 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3598:5: note:   template argument deduction/substitution failed:
a.cc:20:72: note:   'std::vector<int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   20 |         for (int i = 1; i <= n; i++) sort(bir[i], bir[i] + bir[i].size());
      |                                                                        ^
/usr/include/c++/14/bits/basic_string.h:3616:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3616 |     operator+(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3616:5: note:   template argument deduction/substitution failed:
a.cc:20:72: note:   mismatched types 'const _CharT*' and 'std::vector<int>'
   20 |         for (int i = 1; i <= n; i++) sort(bir[i], bir[i] + bir[i].size());
      |                                                                        ^
/usr/include/c++/14/bits/basic_string.h:3635:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(_CharT, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3635 |     operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Alloc>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3635:5: note:   template argument deduction/substitution failed:
a.cc:20:72: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'std::vector<int>::size_type' {aka 'long unsigned int'}
   20 |         for (int i = 1; i <= n; i++) sort(bir[i], bir[i] + bir[i].size());
      |                                                                        ^
/usr/include/c++/14/bits/basic_string.h:3652:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)'
 3652 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3652:5: note:   template argument deduction/substitution failed:
a.cc:20:72: note:   'std::vector<int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   20 |         for (int i = 1; i <= n; i++) sort(bir[i], bir[i] + bir[i].size());
      |                                                                        ^
/usr/include/c++/14/bits/basic_string.h:3670:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, _CharT)'
 3670 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, _CharT __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3670:5: note:   template argument deduction/substitution failed:
a.cc:20:72: note:   'std::vector<int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   20 |         for (int i = 1; i <= n; i++) sort(bir[i], bir[i] + bir[i].size());
      |                                                                        ^
/usr/include/c++/14/bits/basic_string.h:3682:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3682 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3682:5: note:   template argument deduction/substitution failed:
a.cc:20:72: note:   'std::vector<int>' is not derived from 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   20 |         for (int i = 1; i <= n; i++) sort(bir[i], bir[i] + bir[i].size());
      |                                                                        ^
/usr/include/c++/14/bits/basic_string.h:3689:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3689 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3689:5: note:   template argument deduction/substitution failed:
a.cc:20:72: note:   'std::vector<int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   20 |         for (int i = 1; i <= n; i++) sort(bir[i], bir[i] + bir[i].size());
      |                                                                        ^
/usr/include/c++/14/bits/basic_string.h:3696:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3696 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3696:5: note:   template argument deduction/substitution failed:
a.cc:20:72: note:   'std::vector<int>' is not derived from 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   20 |         for (int i = 1; i <= n; i++) sort(bir[i], bir[i] + bir[i].size());
      |                                                                        ^
/usr/include/c++/14/bits/basic_string.h:3719:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const _CharT*, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3719 |     operator+(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3719:5: note:   template argument deduction/substitution failed:
a.cc:20:72: note:   mismatched types 'const _CharT*' and 'std::vector<int>'
   20 |         for (int i = 1; i <= n; i++) sort(bir[i], bir[i] + bir[i].size());
      |                                                                        ^
/usr/include/c++/14/bits/basic_string.h:3726:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(_CharT, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3726 |     operator+(_CharT __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3726:5: note:   template argument deduction/substitution failed:
a.cc:20:72: note:   mismatched types 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'std::vector<int>::size_type' {aka 'long unsigned int'}
   20 |         for (int i = 1; i <= n; i++) sort(bir[i], bir[i] + bir[i].size());
      |                                                                        ^
/usr/include/c++/14/bits/basic_string.h:3733:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::oper