Problem	flip
User	itsLQ
Submission Time	2024-03-12 22:51:45
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

flip.cpp: In function ‘int main()’:
flip.cpp:21:41: error: use of deleted function ‘std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map() [with _Key = std::pair<int, int>; _Tp = bool; _Hash = std::hash<std::pair<int, int> >; _Pred = std::equal_to<std::pair<int, int> >; _Alloc = std::allocator<std::pair<const std::pair<int, int>, bool> >]’
21 | unordered_map<pair<int, int>, bool> visited;
| ^~~~~~~
In file included from /usr/include/c++/9/unordered_map:47,
from /usr/include/c++/9/functional:61,
from /usr/include/c++/9/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/9/algorithm:71,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:65,
from flip.cpp:2:
/usr/include/c++/9/bits/unordered_map.h:141:7: note: ‘std::unordered_map<_Key, _