tickets.cpp: In function 'long long int find_maximum(int, std::vector<std::vector<int> >)':
tickets.cpp:43:35: error: no matching function for call to 'std::set<std::pair<int, int> >::erase(std::set<std::pair<int, int> >::reverse_iterator)'
43 | rows[j].erase(rows[j].rbegin());
| ^
In file included from /usr/include/c++/10/set:61,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:87,
from tickets.cpp:3:
/usr/include/c++/10/bits/stl_set.h:654:7: note: candidate: 'std::set<_Key, _Compare, _Alloc>::iterator std::set<_Key, _Compare, _Alloc>::erase(std::set<_Key, _Compare, _Alloc>::const_iterator) [with _Key = std::pair<int, int>; _Compare = std::less<std::pair<int, int> >; _Alloc = std::allocator<std::pair<int, int> >; std::set<_Key, _Compare, _Alloc>::iterator = std::_Rb_tree<std::pair<int, int>, std::pair<int, int>, std::_Identity<std::pair<int, int> >, std::less<std::pair<int, int> >, std::allocator<std::pair<int, int> > >::const_iterator; std::set<_Key, _Compare, _Alloc>::const_iterator = std::_Rb_tree<std::pair<int, int>, std::pair<int, int>, std::_Identity<std::pair<int, int> >, std::less<std::pair<int, int> >, std::allocator<std::pair<int, int> > >::const_iterator]'
654 | erase(const_iterator __position)
| ^~~~~
/usr/include/c++/10/bits/stl_set.h:654:28: note: no known conversion for argument 1 from 'std::set<std::pair<int, int> >::reverse_iterator' {aka 'std::reverse_iterator<std::_Rb_tree_const_iterator<std::pair<int, int> > >'} to 'std::set<std::pair<int, int> >::const_iterator' {aka 'std::_Rb_tree<std::pair<int, int>, std::pair<int, int>, std::_Identity<std::pair<int, int> >, std::less<std::pair<int, int> >, std::allocator<std::pair<int, int> > >::const_iterator'}
654 | erase(const_iterator __position)
| ~~~~~~~~~~~~~~~^~~~~~~~~~
/usr/include/c++/10/bits/stl_set.h:684:7: note: candidate: 'std::set<_Key, _Compare, _Alloc>::size_type std::set<_Key, _Compare, _Alloc>::erase(const key_type&) [with _Key = std::pair<int, int>; _Compare = std::less<std::pair<int, int> >; _Alloc = std::allocator<std::pair<int, int> >; std::set<_Key, _Compare, _Alloc>::size_type = long unsigned int; std::set<_Key, _Compare, _Alloc>::key_type = std::pair<int, int>]'
684 | erase(const key_type& __x)
| ^~~~~
/usr/include/c++/10/bits/stl_set.h:684:29: note: no known conversion for argument 1 from 'std::set<std::pair<int, int> >::reverse_iterator' {aka 'std::reverse_iterator<std::_Rb_tree_const_iterator<std::pair<int, int> > >'} to 'const key_type&' {aka 'const std::pair<int, int>&'}
684 | erase(const key_type& __x)
| ~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_set.h:706:7: note: candidate: 'std::set<_Key, _Compare, _Alloc>::iterator std::set<_Key, _Compare, _Alloc>::erase(std::set<_Key, _Compare, _Alloc>::const_iterator, std::set<_Key, _Compare, _Alloc>::const_iterator) [with _Key = std::pair<int, int>; _Compare = std::less<std::pair<int, int> >; _Alloc = std::allocator<std::pair<int, int> >; std::set<_Key, _Compare, _Alloc>::iterator = std::_Rb_tree<std::pair<int, int>, std::pair<int, int>, std::_Identity<std::pair<int, int> >, std::less<std::pair<int, int> >, std::allocator<std::pair<int, int> > >::const_iterator; std::set<_Key, _Compare, _Alloc>::const_iterator = std::_Rb_tree<std::pair<int, int>, std::pair<int, int>, std::_Identity<std::pair<int, int> >, std::less<std::pair<int, int> >, std::allocator<std::pair<int, int> > >::const_iterator]'
706 | erase(const_iterator __first, const_iterator __last)
| ^~~~~
/usr/include/c++/10/bits/stl_set.h:706:7: note: candidate expects 2 arguments, 1 provided