Problem	knightmoves
User	ForgottenDragon
Submission Time	2025-08-20 21:30:42
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

knightmoves.cpp:30:24: error: use of deleted function ‘std::unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set() [with _Value = std::pair<long long int, long long int>; _Hash = std::hash<std::pair<long long int, long long int> >; _Pred = std::equal_to<std::pair<long long int, long long int> >; _Alloc = std::allocator<std::pair<long long int, long long int> >]’
30 | unordered_set<pll> visited; // if it is in this, it is visited already.
| ^~~~~~~
In file included from /usr/include/c++/9/unordered_set:47,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:118,
from knightmoves.cpp:1:
/usr/include/c++/9/bits/unordered_set.h:135:7: note: ‘std::unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set() [with _Value = std::pair<long long int, long long int>; _Hash = std::hash<std::pair<long long int, long long int> &g