제출 #825726

#제출 시각아이디문제언어결과실행 시간메모리
825726ttamxThousands Islands (IOI22_islands)C++17
컴파일 에러
0 ms0 KiB
#include "islands.h" #include<bits/stdc++.h> using namespace std; const int N=1e5+5; const int M=2e5+5; int n,m; vector<pair<int,int>> adj[N]; vector<int> path; bool vis[N]; int dfs(int u){ if(vis[u])return u; for(auto [v,id]:adj[u]){ path.emplace_back(id); int res=dfs(v); if(res!=-1)return res; path.pop_back(); } return -1; } variant<bool, vector<int>> find_journey(int N,int M,vector<int> U,vector<int> V){ n=N,m=M; for(int i=0;i<m;i+=2)adj[U[i]].emplace_back(V[i]); int res=dfs(0); if(res==-1)return false; return true; }

컴파일 시 표준 에러 (stderr) 메시지

In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/c++allocator.h:33,
                 from /usr/include/c++/10/bits/allocator.h:46,
                 from /usr/include/c++/10/vector:64,
                 from islands.h:2,
                 from islands.cpp:1:
/usr/include/c++/10/ext/new_allocator.h: In instantiation of 'void __gnu_cxx::new_allocator<_Tp>::construct(_Up*, _Args&& ...) [with _Up = std::pair<int, int>; _Args = {int&}; _Tp = std::pair<int, int>]':
/usr/include/c++/10/bits/alloc_traits.h:512:17:   required from 'static void std::allocator_traits<std::allocator<_Tp1> >::construct(std::allocator_traits<std::allocator<_Tp1> >::allocator_type&, _Up*, _Args&& ...) [with _Up = std::pair<int, int>; _Args = {int&}; _Tp = std::pair<int, int>; std::allocator_traits<std::allocator<_Tp1> >::allocator_type = std::allocator<std::pair<int, int> >]'
/usr/include/c++/10/bits/vector.tcc:115:30:   required from 'std::vector<_Tp, _Alloc>::reference std::vector<_Tp, _Alloc>::emplace_back(_Args&& ...) [with _Args = {int&}; _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; std::vector<_Tp, _Alloc>::reference = std::pair<int, int>&]'
islands.cpp:27:50:   required from here
/usr/include/c++/10/ext/new_allocator.h:150:4: error: no matching function for call to 'std::pair<int, int>::pair(int&)'
  150 |  { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10/utility:70,
                 from /usr/include/c++/10/variant:37,
                 from islands.h:1,
                 from islands.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:452:9: note: candidate: 'template<class ... _Args1, long unsigned int ..._Indexes1, class ... _Args2, long unsigned int ..._Indexes2> std::pair<_T1, _T2>::pair(std::tuple<_Args1 ...>&, std::tuple<_Args2 ...>&, std::_Index_tuple<_Indexes1 ...>, std::_Index_tuple<_Indexes2 ...>) [with _Args1 = {_Args1 ...}; long unsigned int ..._Indexes1 = {_Indexes1 ...}; _Args2 = {_Args2 ...}; long unsigned int ..._Indexes2 = {_Indexes2 ...}; _T1 = int; _T2 = int]'
  452 |         pair(tuple<_Args1...>&, tuple<_Args2...>&,
      |         ^~~~
/usr/include/c++/10/bits/stl_pair.h:452:9: note:   template argument deduction/substitution failed:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/c++allocator.h:33,
                 from /usr/include/c++/10/bits/allocator.h:46,
                 from /usr/include/c++/10/vector:64,
                 from islands.h:2,
                 from islands.cpp:1:
/usr/include/c++/10/ext/new_allocator.h:150:4: note:   mismatched types 'std::tuple<_Tps ...>' and 'int'
  150 |  { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10/utility:70,
                 from /usr/include/c++/10/variant:37,
                 from islands.h:1,
                 from islands.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:387:9: note: candidate: 'template<class ... _Args1, class ... _Args2> std::pair<_T1, _T2>::pair(std::piecewise_construct_t, std::tuple<_Args1 ...>, std::tuple<_Args2 ...>) [with _Args1 = {_Args1 ...}; _Args2 = {_Args2 ...}; _T1 = int; _T2 = int]'
  387 |         pair(piecewise_construct_t, tuple<_Args1...>, tuple<_Args2...>);
      |         ^~~~
/usr/include/c++/10/bits/stl_pair.h:387:9: note:   template argument deduction/substitution failed:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/c++allocator.h:33,
                 from /usr/include/c++/10/bits/allocator.h:46,
                 from /usr/include/c++/10/vector:64,
                 from islands.h:2,
                 from islands.cpp:1:
/usr/include/c++/10/ext/new_allocator.h:150:4: note:   candidate expects 3 arguments, 1 provided
  150 |  { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10/utility:70,
                 from /usr/include/c++/10/variant:37,
                 from islands.h:1,
                 from islands.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:381:21: note: candidate: 'template<class _U1, class _U2, typename std::enable_if<(std::_PCC<((! std::is_same<int, _U1>::value) || (! std::is_same<int, _U2>::value)), int, int>::_MoveConstructiblePair<_U1, _U2>() && (! std::_PCC<((! std::is_same<int, _U1>::value) || (! std::is_same<int, _U2>::value)), int, int>::_ImplicitlyMoveConvertiblePair<_U1, _U2>())), bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(std::pair<_U1, _U2>&&) [with _U1 = _U1; _U2 = _U2; typename std::enable_if<(std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_MoveConstructiblePair<_U1, _U2>() && (! std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_ImplicitlyMoveConvertiblePair<_U1, _U2>())), bool>::type <anonymous> = <anonymous>; _T1 = int; _T2 = int]'
  381 |  explicit constexpr pair(pair<_U1, _U2>&& __p)
      |                     ^~~~
/usr/include/c++/10/bits/stl_pair.h:381:21: note:   template argument deduction/substitution failed:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/c++allocator.h:33,
                 from /usr/include/c++/10/bits/allocator.h:46,
                 from /usr/include/c++/10/vector:64,
                 from islands.h:2,
                 from islands.cpp:1:
/usr/include/c++/10/ext/new_allocator.h:150:4: note:   mismatched types 'std::pair<_T1, _T2>' and 'int'
  150 |  { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10/utility:70,
                 from /usr/include/c++/10/variant:37,
                 from islands.h:1,
                 from islands.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:371:12: note: candidate: 'template<class _U1, class _U2, typename std::enable_if<(std::_PCC<((! std::is_same<int, _U1>::value) || (! std::is_same<int, _U2>::value)), int, int>::_MoveConstructiblePair<_U1, _U2>() && std::_PCC<((! std::is_same<int, _U1>::value) || (! std::is_same<int, _U2>::value)), int, int>::_ImplicitlyMoveConvertiblePair<_U1, _U2>()), bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(std::pair<_U1, _U2>&&) [with _U1 = _U1; _U2 = _U2; typename std::enable_if<(std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_MoveConstructiblePair<_U1, _U2>() && std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_ImplicitlyMoveConvertiblePair<_U1, _U2>()), bool>::type <anonymous> = <anonymous>; _T1 = int; _T2 = int]'
  371 |  constexpr pair(pair<_U1, _U2>&& __p)
      |            ^~~~
/usr/include/c++/10/bits/stl_pair.h:371:12: note:   template argument deduction/substitution failed:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/c++allocator.h:33,
                 from /usr/include/c++/10/bits/allocator.h:46,
                 from /usr/include/c++/10/vector:64,
                 from islands.h:2,
                 from islands.cpp:1:
/usr/include/c++/10/ext/new_allocator.h:150:4: note:   mismatched types 'std::pair<_T1, _T2>' and 'int'
  150 |  { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10/utility:70,
                 from /usr/include/c++/10/variant:37,
                 from islands.h:1,
                 from islands.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:361:21: note: candidate: 'template<class _U1, class _U2, typename std::enable_if<(_MoveConstructiblePair<_U1, _U2>() && (! _ImplicitlyMoveConvertiblePair<_U1, _U2>())), bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(_U1&&, _U2&&) [with _U1 = _U1; _U2 = _U2; typename std::enable_if<(std::_PCC<true, _T1, _T2>::_MoveConstructiblePair<_U1, _U2>() && (! std::_PCC<true, _T1, _T2>::_ImplicitlyMoveConvertiblePair<_U1, _U2>())), bool>::type <anonymous> = <anonymous>; _T1 = int; _T2 = int]'
  361 |  explicit constexpr pair(_U1&& __x, _U2&& __y)
      |                     ^~~~
/usr/include/c++/10/bits/stl_pair.h:361:21: note:   template argument deduction/substitution failed:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/c++allocator.h:33,
                 from /usr/include/c++/10/bits/allocator.h:46,
                 from /usr/include/c++/10/vector:64,
                 from islands.h:2,
                 from islands.cpp:1:
/usr/include/c++/10/ext/new_allocator.h:150:4: note:   candidate expects 2 arguments, 1 provided
  150 |  { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10/utility:70,
                 from /usr/include/c++/10/variant:37,
                 from islands.h:1,
                 from islands.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:352:12: note: candidate: 'template<class _U1, class _U2, typename std::enable_if<(_MoveConstructiblePair<_U1, _U2>() && _ImplicitlyMoveConvertiblePair<_U1, _U2>()), bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(_U1&&, _U2&&) [with _U1 = _U1; _U2 = _U2; typename std::enable_if<(std::_PCC<true, _T1, _T2>::_MoveConstructiblePair<_U1, _U2>() && std::_PCC<true, _T1, _T2>::_ImplicitlyMoveConvertiblePair<_U1, _U2>()), bool>::type <anonymous> = <anonymous>; _T1 = int; _T2 = int]'
  352 |  constexpr pair(_U1&& __x, _U2&& __y)
      |            ^~~~
/usr/include/c++/10/bits/stl_pair.h:352:12: note:   template argument deduction/substitution failed:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/c++allocator.h:33,
                 from /usr/include/c++/10/bits/allocator.h:46,
                 from /usr/include/c++/10/vector:64,
                 from islands.h:2,
                 from islands.cpp:1:
/usr/include/c++/10/ext/new_allocator.h:150:4: note:   candidate expects 2 arguments, 1 provided
  150 |  { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10/utility:70,
                 from /usr/include/c++/10/variant:37,
                 from islands.h:1,
                 from islands.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:343:17: note: candidate: 'template<class _U2, typename std::enable_if<_CopyMovePair<false, int, _U2>(), bool>::type <anonymous> > std::pair<_T1, _T2>::pair(const _T1&, _U2&&) [with _U2 = _U2; typename std::enable_if<std::_PCC<true, _T1, _T2>::_CopyMovePair<false, _T1, _U2>(), bool>::type <anonymous> = <anonymous>; _T1 = int; _T2 = int]'
  343 |        explicit pair(const _T1& __x, _U2&& __y)
      |                 ^~~~
/usr/include/c++/10/bits/stl_pair.h:343:17: note:   template argument deduction/substitution failed:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/c++allocator.h:33,
                 from /usr/include/c++/10/bits/allocator.h:46,
                 from /usr/include/c++/10/vector:64,
                 from islands.h:2,
                 from islands.cpp:1:
/usr/include/c++/10/ext/new_allocator.h:150:4: note:   candidate expects 2 arguments, 1 provided
  150 |  { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10/utility:70,
                 from /usr/include/c++/10/variant:37,
                 from islands.h:1,
                 from islands.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:336:18: note: candidate: 'template<class _U2, typename std::enable_if<_CopyMovePair<true, int, _U2>(), bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(const _T1&, _U2&&) [with _U2 = _U2; typename std::enable_if<std::_PCC<true, _T1, _T2>::_CopyMovePair<true, _T1, _U2>(), bool>::type <anonymous> = <anonymous>; _T1 = int; _T2 = int]'
  336 |        constexpr pair(const _T1& __x, _U2&& __y)
      |                  ^~~~
/usr/include/c++/10/bits/stl_pair.h:336:18: note:   template argument deduction/substitution failed:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/c++allocator.h:33,
                 from /usr/include/c++/10/bits/allocator.h:46,
                 from /usr/include/c++/10/vector:64,
                 from islands.h:2,
                 from islands.cpp:1:
/usr/include/c++/10/ext/new_allocator.h:150:4: note:   candidate expects 2 arguments, 1 provided
  150 |  { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10/utility:70,
                 from /usr/include/c++/10/variant:37,
                 from islands.h:1,
                 from islands.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:329:27: note: candidate: 'template<class _U1, typename std::enable_if<_MoveCopyPair<false, _U1, int>(), bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(_U1&&, const _T2&) [with _U1 = _U1; typename std::enable_if<std::_PCC<true, _T1, _T2>::_MoveCopyPair<false, _U1, _T2>(), bool>::type <anonymous> = <anonymous>; _T1 = int; _T2 = int]'
  329 |        explicit constexpr pair(_U1&& __x, const _T2& __y)
      |                           ^~~~
/usr/include/c++/10/bits/stl_pair.h:329:27: note:   template argument deduction/substitution failed:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/c++allocator.h:33,
                 from /usr/include/c++/10/bits/allocator.h:46,
                 from /usr/include/c++/10/vector:64,
                 from islands.h:2,
                 from islands.cpp:1:
/usr/include/c++/10/ext/new_allocator.h:150:4: note:   candidate expects 2 arguments, 1 provided
  150 |  { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10/utility:70,
                 from /usr/include/c++/10/variant:37,
                 from islands.h:1,
                 from islands.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:322:18: note: candidate: 'template<class _U1, typename std::enable_if<_MoveCopyPair<true, _U1, int>(), bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(_U1&&, const _T2&) [with _U1 = _U1; typename std::enable_if<std::_PCC<true, _T1, _T2>::_MoveCopyPair<true, _U1, _T2>(), bool>::type <anonymous> = <anonymous>; _T1 = int; _T2 = int]'
  322 |        constexpr pair(_U1&& __x, const _T2& __y)
      |                  ^~~~
/usr/include/c++/10/bits/stl_pair.h:322:18: note:   template argument deduction/substitution failed:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/c++allocator.h:33,
                 from /usr/include/c++/10/bits/allocator.h:46,
                 from /usr/include/c++/10/vector:64,
                 from islands.h:2,
                 from islands.cpp:1:
/usr/include/c++/10/ext/new_allocator.h:150:4: note:   candidate expects 2 arguments, 1 provided
  150 |  { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10/utility:70,
                 from /usr/include/c++/10/variant:37,
                 from islands.h:1,
                 from islands.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:315:17: note: candidate: 'constexpr std::pair<_T1, _T2>::pair(std::pair<_T1, _T2>&&) [with _T1 = int; _T2 = int]'
  315 |       constexpr pair(pair&&) = default;  ///< Move constructor
      |                 ^~~~
/usr/include/c++/10/bits/stl_pair.h:315:22: note:   no known conversion for argument 1 from 'int' to 'std::pair<int, int>&&'
  315 |       constexpr pair(pair&&) = default;  ///< Move constructor
      |                      ^~~~~~
/usr/include/c++/10/bits/stl_pair.h:314:17: note: candidate: 'constexpr std::pair<_T1, _T2>::pair(const std::pair<_T1, _T2>&) [with _T1 = int; _T2 = int]'
  314 |       constexpr pair(const pair&) = default; ///< Copy constructor
      |                 ^~~~
/usr/include/c++/10/bits/stl_pair.h:314:22: note:   no known conversion for argument 1 from 'int' to 'const std::pair<int, int>&'
  314 |       constexpr pair(const pair&) = default; ///< Copy constructor
      |                      ^~~~~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:309:21: note: candidate: 'template<class _U1, class _U2, typename std::enable_if<(std::_PCC<((! std::is_same<int, _U1>::value) || (! std::is_same<int, _U2>::value)), int, int>::_ConstructiblePair<_U1, _U2>() && (! std::_PCC<((! std::is_same<int, _U1>::value) || (! std::is_same<int, _U2>::value)), int, int>::_ImplicitlyConvertiblePair<_U1, _U2>())), bool>::type <anonymous> > constexpr std::pair<_T1, _T2>::pair(const std::pair<_U1, _U2>&) [with _U1 = _U1; _U2 = _U2; typename std::enable_if<(std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_ConstructiblePair<_U1, _U2>() && (! std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_ImplicitlyConvertiblePair<_U1, _U2>())), bool>::type <anonymous> = <anonymous>; _T1 = int; _T2 = int]'
  309 |  explicit constexpr pair(const pair<_U1, _U2>& __p)
      |                     ^~~~
/usr/include/c++/10/bits/stl_pair.h:309:21: note:   template argument deduction/substitution failed:
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/c++allocator.h:33,
                 from /usr/include/c++/10/bits/allocator.h:46,
                 from /usr/include/c++/10/vector:64,
                 from islands.h:2,
                 from islands.cpp:1:
/usr/include/c++/10/ext/new_allocator.h:150:4: note:   mismatched types 'const std::pair<_T1, _T2>' and 'int'
  150 |  { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10/utility:70,
                 from /usr/include/c++/10/variant:37,
                 from islands.h:1,
                 from islands.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:300:19: note: candidate: 'template<class _U1, class _U2, typename std::enable_if<(std::_PCC<((! std::is_same<int, _U1>::value) || (! std::is_same<int, _U2>::value)), int, int>::_ConstructiblePair<_U1, _U2>() && std::_PCC<((! std::is_same<int, _U1>::value) || (