0_0_18476272_14778.cpp: In function 'void solve()':
0_0_18476272_14778.cpp:62:27: error: no matching function for call to 'std::unordered_set<std::pair<long long int, long long int>, Hash>::emplace(<brace-enclosed initializer list>)'
ustpll.emplace({ x, y });
^
0_0_18476272_14778.cpp:62:27: note: candidate is:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/unordered_set:48:0,
from 0_0_18476272_14778.cpp:19:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:329:2: note: std::pair<typename std::_Hashtable<_Value, _Value, _Alloc, std::__detail::_Identity, _Pred, _Hash, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<std::__not_<std::__and_<std::__is_fast_hash<_Hash>, std::__detail::__is_noexcept_hash<_Tp, _Hash> > >::value, true, true> >::iterator, bool> std::unordered_set<_Value, _Hash, _Pred, _Alloc>::emplace(_Args&& ...) [with _Args = {}; _Value = std::pair<long long int, long long int>; _Hash = Hash; _Pred = std::equal_to<std::pair<long long int, long long int> >; _Alloc = std::allocator<std::pair<long long int, long long int> >; typename std::_Hashtable<_Value, _Value, _Alloc, std::__detail::_Identity, _Pred, _Hash, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<std::__not_<std::__and_<std::__is_fast_hash<_Hash>, std::__detail::__is_noexcept_hash<_Tp, _Hash> > >::value, true, true> >::iterator = std::__detail::_Node_iterator<std::pair<long long int, long long int>, true, true>]
emplace(_Args&&... __args)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:329:2: note: candidate expects 0 arguments, 1 provided
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